If one bag of grass seed will cover 225 square feet, what is the minimum number of bags the haney family will need to cover their entire backyard?

9 bags

Step-by-step explanation:

First we will need to calculate the area of their entire backyard, which has a shape of trapezium.

So the formula for the area of a trapezium is

a and b are the lenghts of the parallel sides and h is the height.

From the picture

Then we plug into our formula

square feet

To get the number of bags required we just simply divide the aree of their entire yard by the space that 1 bag covers. We get:

bags

This is more than 8 bags so they will need 9 bags to cover their entire yard.

fwms@lil_ben06

step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".