what is the volume? How many cans of paint will the farmer need to buy in order to paint the entire silo.

Question

what is its volume. A typical can of paint covers 400 squared meters. How many cans of paint will the farmer need to buy in order to paint the entire silo.

Answer 1

V is sum of cylinder volume and cone volume (irrelevant to paint problem.

pir^2h + 1/3 pir^2h.

You are given d = 2r and h for the cylinder

You are given the slant height of the cone of 20. Find the height, h = sqrt(20^2 - 17^2).

In order to find the amount of paint used, you need to find the area inside the silo:

A_cyl = 2pirh.

The cone has a lateral surface area of pirS where S is the slant height.

Once you know the surface area, multiply by 1 can per 400 ft^2. Notice that your area will be in m^2: There are 3.28^2 ft^2/m^2.