Question

The function V (r) = 10Tr2 represents the volume of a cylinder that is 10 inches high with a radius of
r. Which is the correct interpretation for the function notation V (3) = 90т? (1 point)
• The volume of the cylinder is 3 when the radius is 90T.
• The volume of the cylinder is 90m when the radius is 3.
• A cylinder of 90m is produced from a radius of 3.
• A radius of 3 gives the value 90.

Answer 1

Answer: the second choice.

Reason: V(r) = 10πr^2 so V(3) = 10π(3)^2 = 90π. Thus the volume is 90π (cubic inches) when the radius is 3.