Natalia is getting ready to cut a log up into smaller pieces. The log is in the shape of a right circular cylinder. The length of the log is 20 feet, and the radius is 1.5 feet. Solve for the surface area. Use 3.14 for π . (1 point)

Question

___ feet2

Answer 1

The surface area of a right circular cylinder can be calculated using the formula:

Surface Area = 2πrh + 2πr^2

Where:
r = radius of the cylinder
h = height of the cylinder

Given:
r = 1.5 feet
h = 20 feet

Surface Area = 2 * 3.14 * 1.5 * 20 + 2 * 3.14 * (1.5)^2
Surface Area = 188.4 + 14.13
Surface Area = 202.53 feet^2

Therefore, the surface area of the log is 202.53 square feet.

Answer 2

A water tank is in the shape of a right circular cylinder. The diameter is 8 feet, and the height is 21.5 feet. Find the surface area of the water tank. Use 3.14 for π . (1 point)

___ feet2

Answer 3

Given:
- Diameter = 8 feet
- Radius = Diameter/2 = 8/2 = 4 feet
- Height = 21.5 feet

The surface area of a right circular cylinder can be calculated as:

Surface Area = 2πrh + 2πr^2

Substitute the given values into the formula:

Surface Area = 2 * 3.14 * 4 * 21.5 + 2 * 3.14 * 4^2
Surface Area = 540.8 + 100.48
Surface Area = 641.28 feet^2

Therefore, the surface area of the water tank is 641.28 square feet.