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?

≈ 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 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

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

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step-by-step explanation: