Question

3. Lois's house sits in the middle of her lot.

The lot is shaped like a trapezoid. Except
for the house and driveway, her lot is
covered with grass. How many square feet
of grass are on the lot?
80 ft
75 ft
20 ft
19 ft
50 ft
House
0-25 ft
Driveway
120 ft-
4

Answer 1

6070m^2

Explanation:

Finding the Area of the house: 50*35 = 1250m^2
Finding the area of driveway = 9*20 = 180m^2

The total Area of the trapesium =
`(1)/(2) (a+b)h`

= A = ½ (80 + 120) * 75

= A = ½ * 200 * 75 = 7500 m^2

Add the area of house and driveway and subtract it from the total area of the plot :

7500 - ( 1250 + 180)

= 7500 - 1430 = 6070m^2 is covered in grass