My Math Forum A little help with some cuboid measurements?

 Geometry Geometry Math Forum

 February 19th, 2015, 03:56 AM #1 Member   Joined: Feb 2015 From: Planet Zorg Posts: 67 Thanks: 3 A little help with some cuboid measurements? Hey guys, I really struggle to get my head around these sorts of questions, often coming up with wildly erroneous answers, however if I see the correct answer and the logic of how it was obtained, I have found it is the best way for me to learn. I really want to learn this stuff (high school dropout) and improve my math skills and hopefully one of you fine young mathematician's can assist me? Pretty please Keep up the great work!
 February 21st, 2015, 12:43 AM #2 Member   Joined: Aug 2013 Posts: 32 Thanks: 1 i) CB^2 = 40^2 - 24^2 (Pythagoras theorem) CB=sqrt (40^2 - 24^2) (taking the root of both sides CB = 32 ii) Are of triangle = 0.5 *CB*AB A=384cm2 iii) Area of a circle =pir*r^2 A= 113.097cm2 All of these questions simply require a formula to substitute into. Do you have a list of formulas, ie volume and area formulas? Thanks from matheus
 February 22nd, 2015, 09:18 PM #3 Member   Joined: Feb 2015 From: Planet Zorg Posts: 67 Thanks: 3 Evaeva, Thanks so much for your help here, I am very grateful of your taking the time to reply I do have a list of formulas now which I will refer to and attempt the rest of the questions above.. Once again thank you!!

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