10 second questions

Jai Ganesh · 2014-08-19 00:50:00

Hi bobbym,

The solutions #5209 and #5210 are correct. Brilliant!

#5211. Between a square of perimeter 44 centimeters and a circle of circumference 44 centimeters, which figure has larger are and by how much?

#5212. A wire is bent in the form of a circle of radius 56 centimeters. If it is bent in the form of a square, then what would its area be?

bobbym · 2014-08-19 01:05:02

Hi;

Jai Ganesh · 2014-08-20 00:19:55

Hi bobbym,

The solutions #5211 and #5212 are perfect. Extraordinary, bobbym!

#5213. A wire is bent in the form of a square encloses an area of 484 square centimeters. What will be the enclosed area when the same wire is bent into a circle?

#5214. A circular wire of radius 42 centimeters is bent in the form of a rectangle whose sides are in the ratio :5. Find the smaller side of the rectangle.

bobbym · 2014-08-20 01:36:08

Hi;

Jai Ganesh · 2014-08-21 00:48:50

Hi bobbym,

The solution #5213 is perfect. Splendid, bobbym!

#5214. A circular wire of radius 42 centimeters is bent in the form of a rectangle whose sides are in the ratio 6:5. Find the smaller side of the rectangle.

(Inconvenience regretted)

#5215. There is a rectangular tank of length 180 meters and breadth in a circular field. If the area of the land portion of the field is 40000 square meters, what is the radius of the field?

#5216. The areas of two circular fields are in the ratio 16:49. If the radius of the latter is 14 meters, then what is the radius of the former?
#5215.

Denominator · 2014-08-22 10:33:09

Hi!

Thanks`

Jai Ganesh · 2014-08-22 15:11:44

Hi Denominator,

The solutions #5124 and #5126 are correct. Marvelous!

#5127. If the ratio of two circles is 4:9, then what will be the ratio of their circumferences?

#5218. The perimeter of a circle is equal to the perimeter of a square. Then, what is the ratio of their area?

bobbym · 2014-08-22 20:36:12

Hi;

Jai Ganesh · 2014-08-23 00:31:49

Hi bobbym,

The solutions are 2:3 and 14:11 respectively (#5217 and #5218).

#5219. The diameter of a wheel is 1.26 meters. How far will it travel in 500 revolutions?

#5220. What is the number of revolutions of a wheel of diameter 40 centimeters makes in traveling a distance of 176 meters?

bobbym · 2014-08-23 00:51:37

Hi;

Jai Ganesh · 2014-08-23 23:58:16

Hi bobbym,

The solutions #5219 and #5220 are perfect. Remarkable, bobbym!

#5221. The radius of a wheel is 0.25 meter. Find the number of revolutions it will make to travel a distance of 11 kilometers.

#5222. The wheel of an engine

meters in circumference makes 7 revolutions in 9 seconds. Find the speed of the train in kilometers per hour.

bobbym · 2014-08-24 04:57:26

Hi;

Jai Ganesh · 2014-08-25 01:02:59

Hi bobbym,

The solution #5221 is perfect, Excellent, bobbym!

#5223. The wheel of a motorcycle, 70 centimeters in diameter, makes 40 revolutions in every 10 seconds. What is the speed of the motorcycle in kilometers per hour?

#5224. Find the diameters of a wheel that makes 113 revolutions to go 2 kilometers 26 decameters.

bobbym · 2014-08-25 02:06:18

Hi;

Jai Ganesh · 2014-08-26 01:05:46

Hi bobbym,

The solutions #5223 and #5224 are correct. Magnificent, bobbym!

(Use

)

#5225. A circular ground whose diameter is 35 meters, has a 1.4 meter broad garden around it. What is the area of the garden in square meters?

#5226. A circular garden has a circumference of 440 meters. There is a 7 meter wide border inside the garden along its periphery. Find the area of the border in square meters.

bobbym · 2014-08-26 02:37:04

Hi;

Jai Ganesh · 2014-08-26 23:57:24

Hi bobbym,

The solutions #5225 (roughly) and #5226 are correct. Marvelous, bobbym!

The solution #5225 I get is

#5227. The areas of two concentric circles forming a ring are 154 square centimeters and 616 square centimeters. Find the breadth of the ring.

#5228. A circular park has a path of uniform width around it. The difference between outer and inner circumferences of the circular path is 132 meters. Find its width.

bobbym · 2014-08-27 00:38:50

Hi;

Did you want to use π = 22 / 7? I used π = 3.14159.

Jai Ganesh · 2014-08-28 00:38:53

Hi bobbym,

The solutions #5227 and #5228 are correct. Remarkable, bobbym!

#5229. A circular swimming pool is surrounded by a concrete wall 4 feet wide. If the area of the concrete wall surrounding the pool is 11/25 that of the pool, find the radius of the pool.

#5230. The ratio of the outer and the inner perimeters of a circular path is 23:22. If the path is 5 meters wide, find the diameter of the inner circle.

Jai Ganesh · 2014-08-29 23:55:38

Hi bobbym,

#5231. What will be the area of a semi-circle of a diameter 14 meters?

#5232. A semi-circle shaped window has diameter of 63 centimeters. What is its perimeter equal to?

bobbym · 2014-08-29 23:59:27

Jai Ganesh · 2014-08-30 23:57:57

Hi bobbym,

The solutions #5229 and #5230 are perfect. Excellent, bobbym!

(Use

)

#5233. What will be the area of a semi-circle whose perimeter is 36 centimeters?

#5234. Find the area of a sector of a circle of radius 5 centimeters, formed by an arc of length 3.5 centimeters.

Jai Ganesh · 2014-09-16 01:59:47

Hi bobbym,

#5235. Find the midpoint of the line segment joining the points (1, -1) and (-5, 3).

bobbym · 2014-09-16 07:23:59

Hi;

Jai Ganesh · 2014-09-19 00:55:18

Hi bobbym,

The solution #5235 is correct. Good work!

#5236. Find the midpoint of the line segment joining the points (0,0) and (0,4).

Math Is Fun Forum

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