Question

you are a contractor installing a brick sidewalk. The portion of the sidewalk will occupancy and area of 100 feet long by 4 feet wide. Each brick will occupy and area 8 inches long by 4 inches wide what is the minimum number of bricks will you need to occupy this area

Answer 1

1800 bricks

Explanation:

Given

`Sidewalk = 100ft\ by\ 4ft`

`Brick = 8 in\ by\ 4 in`

Required

Calculate the minimum bricks needed

To start with, we calculate the area of sidewalk

`Sidewalk = 100ft * 4ft`

`Sidewalk = 400ft^2`

Next, we calculate the area of sidewalk

`Brick = 8in * 4in`

`Brick = 32in^2`

Divide area of sidewalks by area of bricks to give number of bricks

`Number = (Sidewalk)/(Brick)`

`Number = (400ft^2)/(32in^2)`

Convert units (
`ft^2` to
`in^2`)

`Number = (400 * 144in^2)/(32in^2)`

`Number = (57600in^2)/(32in^2)`

`Number = 1800`