The rectangle is 17 cm wide and 68 cm2 in area. Find the perimeter of this rectangle.

Formula for the area of a rectangle:
S = a * b, where a and b are the sides of the rectangle.
Let us express the length of the rectangle from this formula:
a = S: b.
Find the length of the rectangle:
68: 17 = 4 cm – the length of the rectangle.
Formula for the perimeter of a rectangle:
P = (a + b) * 2, where a and b are the sides of the rectangle.
Find the perimeter of the rectangle:
(17 + 4) * 2 = 21 * 2 = 42 cm – the perimeter of the rectangle.
Answer: P = 42 cm.