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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 21)

If the perimeter of a rectangle is given by 2l + 2w, what is the perimeter of a rectangle with l = 5 and w = 3?
10
16
13
15

解释

2(5) + 2(3) = 10 + 6 = 16

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