The sum of the lengths of the sides of the rectangle is 42 cm. One of its sides is 6 cm. What is the other side?
| September 5, 2021 | education
The sum of the lengths of the sides of the rectangle is the perimeter of the rectangle and it is 42 cm.
The formula for finding the perimeter of a rectangle looks like this:
P = 2 * (a + b), where a and b are the sides of the rectangle.
Substitute the known values into this formula and find the other side of the rectangle.
42 = 2 * (6 + b).
Divide by 2.
21 = 6 + b.
b = 21 – 6.
b = 15 cm.
Answer: the other side of the rectangle is 15 cm.
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