Okay my daughter has an assignment and she has a triangle with the height of 4.5cm and length 5.36cm and had to find out the other bit to join it together and she says it would be 7cm. Than she has been given a volume of 164cm3 for a triangular prism but they havent been given the length to work out to that volume and she is suck trying to work out how deep the prism is to equal a volume of 164cm3
Can you anyone help her :confused:
May 19th 2012, 09:17 PM
Re: Maths Assignment
Volume V of prism = triangle's area A times depth of prism D; V = AD, so D = V/A
Triangle's area (right triangle, since 3rd side = 7) = 4.5(5.36)/2 = 12.06...so make it 12
Since volume = 164, then depth D = 164 / 12 = 13.6
Next time you post a problem, post the original problem, not your version...OK?