Hello. I shall allow someone else to solve the question 62. I am unable to solve it.
63) We are given a right triangle prism with an area of 450. L=15, and B=5.
This means the (5*15*(AB))/2 = 450 so 900 = 75(AB), so AB = 900/75 = 12.
Notice how we are given that there is a right triangle. This means that we can apply the Pythagorean Theorem. a²+b²=c². a = 5, b = 12. If you know the basic Pythagorean Triples, then you will remember the (5, 12, 13) one.
This means that our missing side is 13.