Question

A cylinder and a rectangular prism have the same volume and same height. The base of the prism is a square with side length 9 cm.



What is the approximate radius of the cylinder?



A.
4.5 cm


B.
5.1 cm


C.
12.9 cm


D.
25.8 cm

Answer 1

@johnweldon1993

Answer 2

well the area of the square base of the prism is

\[A = 9^2\]

and given the circular base of the cylinder has the same area you have

\[9^2 = \pi r^2\]

solve for r.

hope it helps

Answer 3

so the answer is @campbell_st

Answer 4

i don't know... I just explained how you can find it

Answer 5

@johnweldon1993 plz help

Answer 6

is it b 5.1 @campbell_st

Answer 7

well

\[r = \sqrt{\frac{81}{\pi}}\]