Question

Given A=2(lb + lh + bh), find l When A= 73, b= 3 and h= 4​

Answer 1

Answer:

l = 3.5

Step-by-step explanation:

A = 2(lb + lh + bh)

73 = 2(3l + 4l + 3 × 4)

73 = 2(3l + 4l + 12)

73 = 2(7l + 12)

73 = 14l + 24

73 - 24 = 14l

49 = 14l

49 ÷ 14 = l

3.5 = l

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