Maths-
General
Easy

Question

The perimeters of the two figures are equal. What expression represents the missing side length?

The correct answer is: • The perimeter of triangle is the sum of the length of its 3 sides.


    Explanation:
    • We have been given 2 figures in the question and also sides of it.
    • We have also been given that the perimeter of both the figures are equal.
    • We have to find what expression represents the missing side length.
    Step 1 of 1:
    We have given two figure with their sides
    Perimeter of first figure
    equals 2 left parenthesis l plus b right parenthesis
    equals 2 left square bracket left parenthesis 3 x minus 4 right parenthesis plus 2 x right square bracket
    equals 10 x minus 8
    Perimeter of second figure
    left parenthesis 2 x plus 6 right parenthesis plus left parenthesis 2 x plus 6 right parenthesis plus ?
    It is given that both have same perimeter
    So,
    left parenthesis 2 x plus 6 right parenthesis plus left parenthesis 2 x plus 6 right parenthesis plus ? equals 10 x minus 8
    4 x plus 12 plus ? equals 10 x minus 8
    ? equals 6 x minus 20

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