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#526 2011-01-19 01:05:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi Howardroark and bobbym,
The solution to 885 is correct. Good work!
#886. The ratio of volumes of two cylinders having having same radii is 6:7. What is the ratio of their heights?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#527 2011-01-19 06:17:42
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#528 2011-01-19 14:55:33
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#529 2011-01-20 01:01:38
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and Howardroark,
The solution to 886 is correct. Good work!
Time taken : 2 minutes
#887. The surface area of a sphere is 154 square cm. What is its radius?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#530 2011-01-20 05:25:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#531 2011-01-20 19:33:02
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#532 2011-01-21 00:39:59
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and Howardroark,
The solution to 887 is correct. Brilliant!
#888. Two cones have their heights in the ratio 1:3 and radii of bases in ratio 3:1. Then, what is ratio of volumes?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#533 2011-01-21 01:09:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#534 2011-01-21 14:03:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution to 888 is correct. Well done!
#889. The capacity of a hemishere whose radius is 3 cm is ________________.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#535 2011-01-21 14:55:12
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#536 2011-01-22 00:17:41
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution to 889 is correct. Well done!
#890. The diameter of bases of two cones are equal. If their slant heights are in the ratio 5:3, then what is the ratio of their curved surface area?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#537 2011-01-22 01:54:38
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#538 2011-01-22 08:17:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#539 2011-01-22 18:14:51
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi Howardroark and bobbym,
The solution to 890 is correct. Well done!
#891. The total surface area of a cylinder is 748 square cm. If its radius is 7 cm, what would be its height?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#540 2011-01-22 22:05:04
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#541 2011-01-22 22:16:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#542 2011-01-24 01:11:33
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi Howardroark and bobbym,
The solution to 891 is correct. Brilliant!
#892. The base area of a one is 60 square cm. and height is 6 cm. What is its volume?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#543 2011-01-24 01:19:09
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#544 2011-01-24 01:36:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution to 892 is correct. Neat work!
#893. The volume of a cylinder is
cc and height is 8 cm. What is its radius?It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#545 2011-01-24 01:39:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#546 2011-01-24 02:13:27
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#547 2011-01-25 00:16:58
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and Howardroark,
The solution to 893 is correct. Good work!
#894. A cone and a cylinder are of same heights. The radii of their bases are in ratio 2:1. What is the ratio of their volumes?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#548 2011-01-25 11:27:48
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#549 2011-01-25 17:05:59
- Howardroark
- Member
- Registered: 2010-10-10
- Posts: 382
Re: Oral puzzles
Hi ganesh,
I come from a civilization which has given the world the number 0..
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#550 2011-01-26 00:38:33
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and Howardroark,
The solution to 894 is correct. Perfect!
#895. The flat surface area of hemisphere is 147 square cm. What is its total surface area?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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