The two rectangles are the same width. Find the perimeter of the second rectangle if its length is 13 cm

The two rectangles are the same width. Find the perimeter of the second rectangle if its length is 13 cm.The perimeter of the first rectangle is 30 cm and its length is 10 cm.

The perimeter of a rectangle is calculated using the following formula:

P = 2 * (a + b).

a – length, b – width.

Find the width of the rectangle using this formula, substituting the known values from the first rectangle.

30 = 2 * (10 + b).

30 = 2 * 10 + 2 * b.

2 * b = 30 – 2 * 10.

b = (30 – 2 * 10) / 2.

b = (30 – 20) / 2.

b = 10/2.

b = 5 cm.

Now we find the perimeter of the second rectangle by substituting the known values and the same found width of the rectangles.

P = 2 * (13 + 5) = 2 * 18 = 36 cm.

Answer: the perimeter of the second rectangle is 36 cm.