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28-09-2017
Mathematics

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The length of a rectangle is twice its width the area is 50 what is the perimeter

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tastykitkat tastykitkat

01-10-2017

L = 2w
a = 50
a = L · w
50 = 2w · w
50 = 2w²
25 = w²
5 = w

L = 2w
L = 2(5)
L = 10
w = 5

L + L + w + w = perimeter or 2L + 2w = perimeter
10 + 10 + 5 + 5 = perimeter or 2(10) + 2(5) = perimeter
perimeter = 30

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