The length of the rectangle is 12 cm, the width is 4 cm less. Find the area of the rectangle. Calculate its perimeter.
| May 2, 2021 | education
The width of the rectangle is 4 cm less than its length, which is 12 cm, which is:
12 – 4 = 8 cm.
The perimeter (the sum of all sides) is calculated using the formula:
P = 2a + 2b = 2 * 12 + 2 * 8 = 24 + 16 = 40 cm.
The area of such a figure, the opposite dimensions of which are equal, corresponds to:
S = a * b = 12 * 8 = 96 cm².
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