The length of the rectangle is 15 cm and the width is 3 times less. Find the area of a square
| June 25, 2021 | education
The length of the rectangle is 15 cm and the width is 3 times less. Find the area of a square that has the same perimeter as the given rectangle.
1) Let’s find out what width a given rectangle has, if it is known that it is 3 times less than its length, and the length of the rectangle is 15 cm.
15/3 = 5 cm.
2) Find out what perimeter a given rectangle has, if it is known that its sides are 15 cm and 12 cm.
(15 + 5) * 2 = 40 cm.
3) Find out how long the side of a square with a perimeter of 40 cm is.
40/4 = 10 cm.
4) Let’s find out what area a square with a side of 13.5 cm has.
10 * 10 = 100 cm².
Answer: the area of the square was 100 cm².
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