Question

Robert needs enough mulch to cover the triangular garden shown below. If one bag of mulch covers 12 square feet, how many bags of mulch does he need to buy?

Answer 1

he needs to buy 6 bags of mulch

Answer 2

≈ 6 bags

Explanation:

We need to find the area of the triangle

A = 1/2*the base*the height

Here we have:

• the base: 14.1 ft
• the height: 9 ft

=> the area of the triangular garden is: A = 1/2*14.1*9 = 63.45 square feet

Because one bag of mulch covers 12 square feet

=> the number of bags he need to buy is:

= the area of the triangular garden / the area of the bag can cover

= 63.45 / 12 ≈5.2875 bags

≈ 6 bags