Question

A ballasted roof is flat and covered with gravel to hold the roofing material in place. Adam plans to cover the roof in the diagram with gravel.

30 ft.
21 ft.
13 ft.
57 ft.
27 ft.
52 ft.
The area that Adam plans to cover with gravel is
weight of gravel on the roof will be
If the weight of the gravel is 12 pounds per square foot, the total
ling
2,702 square feet
Next
2,374 square feet
2,222 square feet
2,031 square feet

Answer 1

2031 and 16925

Explanation:

Answer 2

`Area = 2,031ft^2`

Total weight of gravel on the roof =
`24,372 pounds`

Explanation:

The area Adams planned to cover with gravel can be divided into 3 rectangles as shown in the diagram attached.

We would have 3 rectangles. See the attachment below to check out how we arrive at the dimensions of the 3 rectangles.

Area of rectangle = L*W

Area to be covered by gravel = area of rectangle 1 + area of rectangle 2 + area of rectangle 3

Area to be covered with gravel =
`(30*17) + (13*9) + (52*27)`

`Area = (30*17) + (13*9) + (52*27) = 2,031ft^2`

Total weight of gravel on the roof = 12 pounds per square foot multiplied by total area of the roof to be covered =
`12 * 2031 = 24,372 pounds`