1. Find the length of the rectangle:
4 + 5 = 9 (cm).
2. Find the perimeter of the rectangle:
P = 2 (a + b), side a is known to us from the conditions of the problem, side b we found in the first action.
P = 2 * (4 + 9) = 26 (cm).
3. Find the area of the rectangle:
S = ab;
S = 4 * 9 = 36 (cm 2).
Answer: the perimeter of the rectangle is 26 cm, the area is 36 cm 2 of the rectangle.
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