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

Answer:

1800 bricks

Step-by-step 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;

$Number = \frac{Sidewalk}{Brick}$

$Number = \frac{400ft^2}{32in^2}$

Convert ft^2 to in^2

$Number = \frac{400 * 144in^2}{32in^2}$

$Number = \frac{57600in^2}{32in^2}$

$Number = 1800$