The length of a rectangle is 2 more than its breadth. If the breadth is a + 2, which of the following represents its perimeter?

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• A 4a+4
• B 4a+8
• C 4a+12
• D 2a+12

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Answer: C. 4a+12

Breadth = a + 2
Length = a + 2 + 2 = a + 4
Perimeter = 2(L + B) = 2(a + 4 + a + 2) = 2(2a + 6) = 4a + 12

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