Question

A cylindrical vase has height 15 in. and radius 3in. Find the exact surface area of the vase in terms of . Suppose a second vase has double the​ radius, but the same surface area. What is the height of this​ vase?

Answer 1

Answer: pi*3^2= 9pi

pi*6=6pi

6pi*17= 102pi

102pi+9pi= 111pi in. squared

pi*6^2=36pi

pi*12=12pi

36pi+12pi*x=111pi

12pi*x=75pi

x=6.25pi

x=Height btw