A right circular cylinder has an altitude of 11 feet and a radius of
5 feet. What is the lateral area, in square feet, of the cylinder, to the
nearest tenth?
345.6
To find the lateral area of a cylinder, we need to calculate the area of the curved surface. The formula for the lateral area of a right circular cylinder is given by:
Lateral Area = 2 * π * radius * height
Given that the altitude (height) of the cylinder is 11 feet and the radius is 5 feet, we can substitute these values into the formula:
Lateral Area = 2 * π * 5 * 11
Now, let's calculate the lateral area:
Lateral Area ≈ 2 * 3.1415 * 5 * 11
Lateral Area ≈ 346.36 square feet
Therefore, the lateral area of the cylinder, to the nearest tenth, is approximately 346.4 square feet.
surface area = 2 circles + a rectangle
= 2πr^2 + 2πrh
= 2π(25) + 2π(5)(11)
= ....