Question

Antoine is using special blackboard paint to paint a blackboard on a classroom wall. The wall is 8 meters long and 3 meters tall. One can of blackboard paint covers 6 square meters. How many cans of blackboard paint does Antoine need?

Answer 1

The area of the wall can be found as the product of the dimensions of the wall

Wall Area = 8(3)m = 24 m²

Because a can covers 6 m², 4 cans of paint are needed

$no. of cans = \frac{24 m ^{2} }{6 m ^{2} } = 4$