Which of the following correctly calculates the lateral area of a cylinder with a base radius length of 7 in. and a height of 10 in?
A. 1,538 in^2
B. 439.6 in^2
C. 747.32 in^2
D. 593.46 in^2
The correct formula for calculating the lateral area of a cylinder is 2πrh, where r is the radius and h is the height.
Given that the base radius length is 7 in. and the height is 10 in:
Lateral Area = 2π(7)(10)
Lateral Area = 140π
Lateral Area ≈ 439.82 in^2
Therefore, the correct answer is:
B. 439.6 in^2