Salma wants to paint the ceiling of her restaurant. The ceiling is in the shape of a square. Its side lengths are feet. Suppose each can of paint will cover square feet. How many cans will she need to paint the ceiling?

__________ cans

Next time how about some actual numbers?

just divide total area by the area covered by each can of paint.

ft^2 / (ft^2/can) = can

To find out how many cans of paint Salma will need to paint the ceiling, you need to determine the area of the ceiling and divide it by the coverage area of each can of paint.

The area of a square can be found by multiplying the length of one side by itself. In this case, since the side lengths are given in feet, the equation for the area would be:

Area = side length * side length

Let's assume that the side length of the square ceiling is 'x' feet. Therefore, the equation for the area of the ceiling would be:

Area = x * x

Given that each can of paint can cover 'y' square feet, the number of cans needed would be:

Number of cans = Area of ceiling / Area covered by each can

Substituting the values we have:

Number of cans = (x * x) / y

Therefore, to calculate the number of cans Salma will need, we require the values of the side length and the coverage area of each can.