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15 July, 14:28

Find the missing measures for the rectangle.

l = _?_

w = 2 cm

A = _?_

P = 25 cm

A) 12.5 cm; 25 cm2

B) 10.5 cm; 21 cm2

C) 12.5 cm; 21 cm2

D) 10.5 cm; 25 cm2

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Answers (1)
  1. 15 July, 15:23
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    P = 2 (L + W)

    P = 25

    W = 2

    25 = 2 (L + 2)

    25 = 2L + 4

    25 - 4 = 2L

    21 = 2L

    21/2 = L

    10.5 = L ... so ur length is 10.5 cm

    A = L * W

    A = 10.5 * 2

    A = 21 cm^2

    so ur answer is B. 10.5 cm, and 21 cm^2
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