12. What is the perimeter of a rectangle
with length of (3x + 1) cm and width of (4x + 3) cm?
A. (14x + 8) cm
C. (7x + 4) cm
B. (8x+14)) cm
D. (7x - 4) cm
with length of (3x + 1) cm and width of (4x + 3) cm?
A. (14x + 8) cm
C. (7x + 4) cm
B. (8x+14)) cm
D. (7x - 4) cm
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