Area of rectangle 8 by 5

Step by step

The question

Question: find the area of a rectangle 8 long and 5 wide.

1 What area means

Area is how much space is inside.

We count the 1 by 1 squares that fit.

One row has 8 squares.

There are 5 rows.

2 Length times width

So the area is length times width: A = length × width.

Squares in a row, times the rows.

Now put the numbers in: length = 8 and width = 5.

8 times 5 is 40.

So the area is 40 square units.

3 Check

Let's check: count row by row.

5 rows of 8 squares.

We get 40 again.

So the area is right!

Let's look back.

First: what area means.

Then: length times width.

Last: check.