Question

? Bags of fertilizer must be purchased to cover the lawn ( round up to the nearest bag)

Answer 1

To solve this question first, we will compute the area of the trapezoid.

Recall that the area of a trapezoid is given by the following formula:

`A=((B+b)\cdot h)/(2),`

where B is the length of the major base, b is the length of the minor base, and h is the height.

Substituting B=160ft, b=40ft and h=60 ft we get:

`A=((160ft+40ft)\cdot60ft)/(2)=((200ft)60ft)/(2ft)=6000ft^2\text{.}`

Now, since each bag covers 2400 square feet, we will use:

`(6000ft^2)/(2400ft^2)=2.5`

bags of fertilizer. Then we must purchase 3 bags of fertilizer.

Answer: 3.