The perimeter of the rectangle is 192 cm, one of the sides is 56 cm. Find the other side.
| January 16, 2021 | education
One side of a rectangle is 56 centimeters long.
The perimeter P of this rectangle is 192 centimeters.
The perimeter is calculated using the formula P = 2a + 2b.
Hence 2b = P – 2a.
2b = 192 – 2 * 56;
2b = 192 – 112;
2b = 80;
b = 80: 2;
b = 40.
The second side of the rectangle is 40 centimeters long.
Answer: side b is 40 centimeters.
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