two spherical cantaloupes of the same kind are sold at a fruit and vegetable stand. The circumference of one is 60cm and that of the other is 50cm. The larger melon is 1 1/2 times as expensive as the smaller. Which melon is the better buy and why?

Answer 1

C = pi * d
60 = 3.14d
60/3.14 = d
19.1 = d

V = 4/3 * pi * r^3
V = 4/3 * 3.14 * 9.55^3
V = 4/3 * 3.14 * 871
V = 3646.6 sq. cm

Do the same for the smaller melon.

Answer 2

C=pi*d
50=3.14d
50/3.14=d
15.9=d

Still trying to get the V problems