The width of the rectangular section is 20 m which is the length of the section if it is known that the perimeter
| February 14, 2021 | education
The width of the rectangular section is 20 m which is the length of the section if it is known that the perimeter of the section is 110 m.
The perimeter of a rectangular area is calculated by the formula:
P = 2 x A + 2 x B,
where A is the length of the rectangular section, and B is its width. Let us express the length from this equation:
A = (P – 2 x B) / 2.
Substitute the values and get the answer:
A = (110 – 2 x 20) / 2;
A = 70/2;
A = 35 (m).
Answer: the length of the rectangular section is 35 m.
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