Question

The diameter of a cylindrical construction pipe is 4 ft. If the pipe is 16 ft long, what is its volume?

Use the value 3.14 for , and round your answer to the nearest whole number.

Be sure to include the correct unit in your answer.

Answer 1

Answer:

201 ft³ (201 cubic feet)

Step-by-step explanation:

The volume of a cylinder is given as:

V = pi * r² * h

Where r = radius of the cylinder

h = length of the cylinder.

The diameter of the cylindrical pipe, d = 4 ft

The radius of the cylindrical pipe, r = d/2 = 4 / 2 = 2 ft

The length of the cylindrical pipe, h = 16 ft

The volume of the cylindrical pipe is:

V = 3.14 * 2² * 16

V = 200.96 ft³ = 201 ft³ (to the nearest whole number)

The volume of the cylindrical pipe is 201 ft³ (201 cubic feet)

Answer 2

Answer: 201 square feet

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Volume of a cylinder: π x radius² x height (in our case the length of the pipe)

Since:

Diameter = radius x 2

In our case D =4

4 = 2radius

Radius= 4/2 = 2 ft

Now that we have the radius, we can use the volume formula replacing with the values given:

V = 3.14x 2² x 16 = 3.14 x 4 x16 =200.96 = 201 square feet