IXL | Rectangles with the same perimeter and different areas

Select the two rectangles that have the same perimeter.

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question

Select the two rectangles that have the same perimeter.

key idea

The perimeter of a shape is the distance around the shape.

To find the perimeter, add the lengths of all the shape's sides.

solution

Find the two rectangles that have the same perimeter.

This rectangle has four sides that are 4 units long.

4 units

Add to find the perimeter.

The perimeter is 16

units.

This rectangle has two sides that are 5 units long and two sides that are 3 units long.

5 units

3 units

Add to find the perimeter.

The perimeter is 16

units.

This rectangle has two sides that are 8 units long and two sides that are 2 units long.

8 units

2 units

Add to find the perimeter.

The perimeter is 20

units.

This rectangle has two sides that are 6 units long and two sides that are 3 units long.

6 units

3 units

Add to find the perimeter.

The perimeter is 18

units.

Both of these rectangles have a perimeter of 16 units. They have the same perimeter.

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Work it out

Not feeling ready yet? These can help:

PP.2Perimeter of rectangles

OO.10Find the area of rectangles and squares

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