SOLUTION: A cylinder has a lateral surface area if 188 square inches. The total surface are of the cylinder is approximately 343 square inches. What would the radius of the base be? A:3inch

Algebra ->  Surface-area -> SOLUTION: A cylinder has a lateral surface area if 188 square inches. The total surface are of the cylinder is approximately 343 square inches. What would the radius of the base be? A:3inch      Log On


   

Question 1098763: A cylinder has a lateral surface area if 188 square inches. The total surface are of the cylinder is approximately 343 square inches. What would the radius of the base be?
A:3inch
B:5inches
C:6inches
D:25inches
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
h, length of cylinder
r, radius of cylinder

system%282pi%2Ar%2Ah=188%2C2%2Api%2Ar%5E2=343-188%29
Two equations in two unknown variables.
You only need to use the second equation.

pi%2Ar%5E2=77.5
r%5E2=24.6690162
highlight%28r=4.9668%29