Question

A cylinder has a height of 12 inches and a radius of 1.5 inches. What is its voulme? Round your answer to the nearest tenth. Use 3.14 for

π
.

Answer 1

Volume of cylinder is 84.78 inches.

Explanation:

Volume of cylinder = π × r ² × h

Where,

• r , is the Radius of cylinder.
• h ,is the height of cylinder.

And we have given that

• Height of cylinder , h = 12 inches
• Radius of the height , r = 1.5 inches
• Value of π = 3.14

Substitute the values

Volume of cylinder = 3.14 × (1.5 inches) × 12 inches

= 3.14 × 2.25 inches² × 12 inches

multiply the values , we get

Volume of cylinder = 84.78 inches³.

84.8 inches³ is the round nearest to tenth.

Answer 2

Find the area of the top, which is a circle.

Area of a circle = pi x r^2

Area = 3.14 x 1.5^2 = 7.065

Now for the volume multiply the area of the top by the height:

7.065 x 12 = 84.78 cubic inches

Round to the nearest tenth: 84.8 cubic inches