8a){-3,50}
9b.)
v(r,h) = 1/3 * pi * r^2 * h
v(r) = 1/3 * pi * r^2 * 13 * r
v(r) = 13/3 * pi * r^3
9c)
A(l,w) = l*w = 5
l = 5/w
D^2 = l^2 + w^2
D(l,w) = sqrt { l^2 + w^2} ......(discarded the negative solution)
D(w) = sqrt{(5/w)^2 + w^2}
12a) {-4,-9}
12b.) {-4, 9}
12c) {-9, 4}
This post was edited by Azrad on Sep 5 2013 01:31am