Question

A concrete pillar has the shape of a cylinder. It has a radius of 6 meters and a height of 4 meters. If concrete costs $82 per cubic meter, how much did the concrete cost for the pillar? Use 3.14 for π, and do not round your answer.

Answer 1

Answer: $37077.12

Step-by-step explanation:

Please see the attachment below

Answer 2

Answer:

The answer is $37,077.12

Step-by-step explanation: First we will calculate the volume of the cylindrical pillar. We use the formula:

πr^2h.

Where:

π = 3.14

r = 6m

h = 4m.

We calculate thus:

3.14 X 6^2 x 4

= 452.16m^3.

Having gotten the volume of the pillar. We proceed to calculate the cost. We have the cost as $82 per cubic meter, and the pillar is 452.16 cubic meters. We therefore multiply the volume of the pillar by the cost per cubic meter, thus:

82 X 452.16 = 37,077.12

Therefore it costs $37,077.12 to build the concrete pillar.