Waffle cones have a volume of about 234cm3. If a cone is 14 cm tall, what is the approximate diameter of its base?

Question

I have no idea what it is

Answer 1

V = 234 = (h)pi(r)^2/3 = (14pi(r)^2)/3

14pi(r)^2 = 702

pi(r)^2 = 702/14 = about 50.14

r^2 = 50.14/3.14 = 15.96

r = sqr15.96 = close to 4 cm

d =2r = 2(4) = 8 cm