Answer:
≈ 6 bags
Step-by-step 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
