Respuesta :
Answer:
$22,968
Step-by-step explanation:
To solve this question, we need to find the volume of the cylinder. Let’s call this V
Mathematically V = πr2h
where r = 3m , h = 7m and π = 22/7
Putting this in the formula:
V = 22/7 * 3 * 3 * 7 = 198 cubic meter
We are told concrete costs $116 per cubic meter. Hence, for 198 cubic meter we have 198 * 116 = $22,968
Answer: the concrete cost for the pillar is $22947.12
Step-by-step explanation:
The formula for determining the volume of a cylinder is expressed as
Volume = πr²h
Where
r represents the radius of the cylinder.
h represents the height of the cylinder.
π is a constant whose value is 3.14
The cylindrical concrete pillar has has a radius of 3 m and a height of 7 m. Therefore, the volume of concrete cylinder would be
Volume = 3.14 × 3² × 7 = 197.82 cubic meter
If concrete cost $116 per cubic meter, the cost of the concrete would be
116 × 197.82
= $22947.12
