Area of rectangle 2.5 by 4

Step by step

The question

Question: find the area of a rectangle 2.5 long and 4 wide.

1 What area means

Area is how much space is inside.

We count the 1 by 1 squares that fit.

The length is 2.5.

The width is 4.

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 = 2.5 and width = 4.

Forget the points: 25 times 4 is 100.

The numbers have 1 digit after the point.

So the answer has 1 too: 10.0, which is 10.

So the area is 10 square units.

Let's look back.

First: what area means.

Last: length times width.