Question

A pipe is 25 inches long and has a diameter of

5 inches. What is the lateral area of the pipe to the nearest
tenth? Use 3.14 for .

Answer 1

The lateral area is 392.5 sq. inches.

Explanation:

The pipe is in a shape of a cylinder. The lateral area formula for a cylinder is:

Lateral Area =
`2\pi r h`

Where

r is the radius (half of diameter)

h is the height

Given, diameter = 5

so,

radius = 5/2 = 2.5

Also,

height = 25 inches (same as length, here)

Now we use 3.14 for
`\pi` and substitute the values to get the lateral area:

Lateral Area =
`2\pi r h = 2(3.14)(2.5)(25)=392.5`

The lateral area is 392.5 sq. inches.