Kerittandygboo Kerittandygboo

05-09-2016
Mathematics

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The length and width of a rectangle are in the ratio 5:3. The perimeter of the rectangle is 32 cm. Find the length and width.

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Kunchan Kunchan

10-09-2016

l / w = 5 / 3
3 l = 5 w

perimeter = 2l + 2w
32 = 2l + 2w
16 = l + w
multiply by 3
48 = 3l + 3w
48 = 5w + 3w
48 = 8w
w = 6 cm

l = 5w / 3
l = 5*6 / 3
l = 10 cm

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