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 minimyn nuber of bricks will you need to occupy this area

Answer 1

1800 bricks

Explanation:

Given

Sidewalk = 100ft by 4ft

Brick = 8 inches by 4 inches

Required

Determine the minimum number of bricks

First, we need to determine the area of both;

`Sidewalk = 100ft * 4ft`

`Sidewalk = 400ft^2`

`Brick = 8in * 4in`

`Brick = 32in^2`

Number of bricks is calculated as follows;

`Number = (Sidewalk)/(Brick)`

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

Convert ft^2 to in^2

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

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

`Number = 1800`