The area of the rectangle is 700 cm square, the length of one side is 35 cm, find the perimeter of the rectangle.

The area of the rectangle is the product of its different-sized sides. Therefore, if you designate the unknown side of the rectangle x cm, you can find its second side:

S = a * b = x * 35 = 700 cm2;

x = 700: 35 = 20 cm.

The perimeter is the sum of all sides. Since the rectangle has 4 sides and they are equal in pairs, the perimeter will be:

P = 35 + 35 + 20 + 20 = 70 + 40 = 110 cm.

Answer: perimeter P = 110 cm.