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a cone-shaped building has a height of 11.4 meters and a base with a diameter of 12 meters. the building will be filled with road salt that costs $20 per cubic meter.

how much will it cost to fill the building with road salt?

use 3.14 for π .

enter your answer in the box.
$

So basically we need to find the volume of this cone-shaped building first.

The formula for the volume of a cone:


Where r is the radius and h is the height.

1.) Plug in 11.4 for h because 11.4 is the height:


2.) The diameter is 12, and the radius is just half of that. So the radius is 6. Plug in 6 for r because 6 is the radius:


3.) Plug in 3.14 for π because the directions told you to:


4.) Simplify:


5.) Simplify further:
V = 429.552

So the volume of the building is 429.552 meters cubed. 
If 1 cubic meter = $20, how much money will 429.552 cubic meters cost?

Multiply 429.552 on both sides:
1 cubic meter (*429.552) = $20 (*429.552)

429.552 cubic meter = $8591.04

That means that 429.552 cubic meters will cost a total of $8591.04 :)

Chemistry is a stone g subject hope you find the answer