The sum of the lengths of all the sides of a rectangle is 18 cm. What could be the length and width

| June 22, 2021 | education

The sum of the lengths of all the sides of a rectangle is 18 cm. What could be the length and width of such rectangles. What are the areas of these rectangles.

The sum of the lengths of all sides of the rectangle is 18 cm, which means the sum of the length and width of this rectangle is equal to half of this sum and is equal to 9 cm.

Consider rectangles, the sum of the length and width of which is 9 cm.

1) The length of the rectangle is 8 cm, the width is 1 cm.

Let’s calculate the area.

S = 8 cm * 1 cm = 8 cm².

2) If the length of the rectangle is 7 cm and the width is 2 cm.

Let’s find the area.

S = 7 cm * 2 cm = 14 cm².

3) The length of the rectangle is 6 cm, width is 3 cm.

Then the area will be equal.

S = 6 cm * 3 cm = 18 cm².

4) If the rectangle is 5 cm long and 4 cm wide.

The area is equal.

S = 5 cm * 4 cm = 20 cm².



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