#### Answer

Yes, it is enough to cover the lawn

#### Work Step by Step

We need to find the area of the triangle, which can be found by using the formula: A = $\frac{b\ \times\ h}{2}$
Substitute 130 for b and 60 for h to obtain:
A = $\frac{130\ \times\ 60}{2}$
A = 130 $\times$ 30
A = 3900 square feet
Since one bag of fertilizer covers 4000 square feet, it is enough to cover the lawn, which is 3900 square feet.