Find the perimeter of a rectangle if one of its sides is 35 cm and the other a) 4 times larger b) 7 times smaller

| April 20, 2021 | education

By the condition of the problem, one of the sides of the rectangle is 35 cm.

1) Find the perimeter of a rectangle equal to twice the sum of its two sides, if the other side of the rectangle is 4 times larger than the first side. First of all, we find the length of the other side:

35 * 4 = 140 cm.

Let’s calculate the perimeter by doubling the sum of the sides received:

P = 2 (35 + 140) = 2 * 175 = 350 (cm).

Answer: the perimeter of the rectangle is 350 cm.

2) Find the perimeter of a rectangle equal to twice the sum of its two sides, if the other side of the rectangle is 7 times less than the first side. First of all, we find the length of the other side:

35: 5 = 7 cm.

Let’s calculate the perimeter by doubling the sum of the sides received:

P = 2 (35 + 7) = 2 * 42 = 84 (cm).

Answer: the perimeter of the rectangle is 84 cm.



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