Question

a concrete pillar has the shape of a cylinder. it has a radius of 4 meters and a height of 7 meters. use 3.14 for π, and do not round your answer. if concrete costs $94 per cubic meter, how much did the concrete cost for the pillar? $

Explanation:

Step1: Calculate cylinder volume

Volume formula: $V = \pi r^2 h$
$V = 3.14 \times 4^2 \times 7 = 3.14 \times 16 \times 7 = 351.68$ cubic meters

Step2: Compute total cost

Total cost = Volume × Cost per cubic meter
Total cost = $351.68 \times 94 = 3386.88$ dollars

Answer:

3386.88