Answer:
r=3.10in
SA= 138.22 in square
Explanation:
Given data
Volume = 121 in^3
Height= 4 in
a) What is the radius of the cylinder?
We know that volume
V=πr^2h
121= 3.14*r^2*4
121= 12.56r^2
121/12.56= r^2
9.63=r^2
r= √9.63
r=3.10in
b) What is the surface area of the cylinder? Give your answer in terms of īt.
The surface area of cylinder is expressed as
SA=2πrh+2πr^2
SA= 2*3.14*3.1*4+ 2*3.14*3.1^2
SA= 77.872+60.3508
SA= 138.22 in square