2 times the sum of 2 sides of a rectangle is 24 cm. Find its width if the length is 8 cm.

6 cm

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8 cm

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4 cm

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10 cm

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Solution

The correct option is C 4 cm
Sum of sides of a rectangle = (l + w)

∴ 2 times the sum of sides = 2(l+w)

So, we can write:
24 = 2(8 + w)
⇒12 = 8 + w
⇒12 - 8 = w
⇒4 = w

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