if the height of a rectangle with area 143sq cm and base length 11cm. what is the perimeter?

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  • Mercy
    Lv 7
    7 years ago
    Favorite Answer

    If the height is 11 cm then 2 sides are 11 cm

    Let x represent the width.

    2(11) + 2(x) = 143

    22 +2x = 143

    2x = 143 -22

    2x = 121

    x = 60.5 ( width)

    143 = 11 +11 + 60.5 + 60.5 = 143 .. so question is correct.

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  • 7 years ago

    143 is the area.

    A = l x w

    Length is given, so

    143 = 11 x w / divide both sides by 11

    w = 13

    Perimeter = 2 ( l + w)

    = = 2 ( 11 + 13)

    P = 48 cm

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  • 7 years ago

    48cm :)

    Source(s): common sense lol
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