The length of the rectangle is 5 inches, the width is 4 cm less. Find the area and perimeter of this rectangle.
August 6, 2021 | education
| Let’s express the length of the rectangle in cm:
5 dm = 50 cm.
1) Determine the width of the rectangle:
50 – 4 = 46 (cm) – the width of the rectangle.
Let’s express the width in dm:
46 cm = 4.6 in.
Formula for finding the area of a rectangle:
S = a * b, where a is the width, b is the length of the rectangle.
Formula for finding the perimeter of a rectangle:
P = 2 * (a + b).
2) Find the area of the rectangle:
5 * 4.6 = 23 (dm ^ 2) – the area of the rectangle.
3) Determine the perimeter of the rectangle:
2 * (5 + 4.6) = 19.2 (dm) – the perimeter of the rectangle.
Answer: the area is 23 dm ^ 2, and the perimeter is 19.2 dm.
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