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#1 Re: Help Me ! » Surface Area of prisms, im lost :( » 2010-03-01 09:16:36
The surface area is made up of two 'curvy triangles' and one 'curvy triangular tube'.
The area of the tube is easy enough once you've found the perimeter of the triangular shape.
The area of the triangle itself is a little harder.I'd do it by first working out what its area would be if you cut off the left hand segment (ignoring the part to the left of line AC), then working out what it would be if you cut off both segments (making it a proper triangle).
By combining those two results in some way, you can find the area of the whole shape.
yeah i tried that before but the answer's
, im not sure if this is correct but my ABC is is this correct?edit: this is what i did for ABC whilst ignoring AC
#2 Re: Help Me ! » Surface Area of prisms, im lost :( » 2010-03-01 08:57:33
Hi waven;
What book?
hi, the book is signpost maths yr9 5.3
#3 Help Me ! » Surface Area of prisms, im lost :( » 2010-02-28 14:46:16
- waven
- Replies: 5
Calculate the surface area of the following prism.
i tried this serveral times,which all the answers were higher than the answer from the back of the book, which is
Thanks
#4 Help Me ! » Omg Surds.... » 2010-02-10 11:38:23
- waven
- Replies: 3
hi, i have surds problem and this is what i did but i got it wrong and i have no idea where, so this is as far as i could go
thanks
#5 Help Me ! » Pythagoris's theorem and its converse » 2010-01-31 12:03:58
- waven
- Replies: 2
hi,
i tried working with the question using this method
but its nowhere close to the answer, which is √130. Thanks!
#6 Help Me ! » Area of a circle :S » 2009-12-19 09:33:08
- waven
- Replies: 4
Q.a tablecloth is to cover a circular table that has a diameter of 1.9m. what area of the cloth is needed if the tablecloth is to hang 15cm over the edge of the table ( nearest to cm² ).
thanks
#7 Re: Help Me ! » Rates... » 2009-12-01 23:54:58
OHHHH, dw about it i just didnt read your last post properly thanks for the help!! 
#8 Re: Help Me ! » Rates... » 2009-12-01 23:42:14
how did you get 10km/h?? :S
#9 Help Me ! » Rates... » 2009-12-01 22:11:20
- waven
- Replies: 7
Q. Tim paddles his kayak upstream from his home to his friend's home, taking 2.5 hours for the journey. He returns that afternoon in 1.5 hours. If the river is flowing at 2.5km/h, find the distance to his friend's place
i check the answers and its 18.75km but i have no idea how to do the working it out.
thanks
#10 Help Me ! » Area Problems#2 » 2009-10-06 14:31:31
- waven
- Replies: 1
Hi,
got another problem similar to the first one
wallpaper comes in rolls that are 50cm wide. what length of wallpaper would be needed to cover two walls 4m by 3m high and one wall 2.5m by 3m high.
The answer says its 63m but i dont know how to work it out
Thanks
#11 Help Me ! » AREA PROBLEMS [hard] » 2009-10-06 02:17:30
- waven
- Replies: 1
Floor tiles measure 300mm by 300mm. How many would be needed to cover a floor measuring 2.4m by 3.6m?
i checked the answer and its "96" im assuming its in metres, but my previous answers were nothing close to the answer 
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