The length of the rectangle is 20cm, which is 2 times its width. Calculate the perimeter of the rectangle and its area.
| April 29, 2021 | education
1) Find out what the width of the rectangle is, if it is known that its length is 20 cm, and it is 2 times greater than the width. Accordingly, the width is 2 times less than the length.
20: 2 = 10 cm.
2) We find out what the area of the rectangle is if it is known that its length is 20 cm and its width is 10 cm.
20 * 10 = 200 cm2.
3) Find out what the perimeter of the rectangle is, if it is known that its length is 20 cm and its width is 10 cm.
(20 + 10) * 2 = 60 cm.
Answer: the area of the rectangle is 200 cm2; the perimeter of the rectangle is 60 cm.
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