Question

6. The length and breadth of a rectangle are (3a + 2) and (2a-1).

Which of the following represents its perimeter?
W: 2(5a - 1)
B. (5a + 1)
C. (5a - 1)
D. 2(5a + 1)
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Answer 1

perimeter: 2l + 2w
plug in l and w
2(3a +2) + 2(2a-1)
6a + 4 + 4a - 2
10a + 2
2(5a + 1)
answer choice is 2(5a+1)