Maths-
General
Easy

Question

Find the length of the boundary of the swimming pool.

The correct answer is: • the perimeter of a rectangle is the measure of the sum of its all sides. A rectangle has four sides in total.


    • We have been given a figure of swimming pool which is in the shape of a rectangle in the question and also the two sides of it.
    •  we have to find the length of the boundary of the swimming pool.
    Step 1 of 1:
    We have given a rectangle with length 9 x minus 1 and breadth 9 x minus 7.
    Now the perimeter of any rectangle is 2 left parenthesis l plus b right parenthesis
    So,

    equals 2 left parenthesis l plus b right parenthesis

    equals 2 left parenthesis 9 x minus 1 plus 9 x minus 7 right parenthesis

    equals 2 left parenthesis 18 x minus 8 right parenthesis
    equals 36 x minus 16

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