Let’s write down the condition of the problem:
1 side of the rectangle – 7 cm.
2 side of the rectangle – 3 cm larger than the first.
The perimeter of the rectangle is? cm.
Comments on the solution:
Find the second side by adding the length of the first side and the number 3, since the second side is 3 cm larger than the first.
Knowing the formula for the perimeter of a rectangle, which is equal to the sum of the lengths of all sides, and the equality of opposite sides, by doubling the addition of all the lengths, we determine the desired perimeter.
1) 7 + 3 = 10 (cm) – the length of the second side of the rectangle.
2) 7 * 2 + 10 * 2 = 34 (cm) – the perimeter of the rectangle.
Answer: 34 cm.
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