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

Answer:

1800 bricks

Step-by-step 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

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

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

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

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

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

$Number = 1800$