Solve the problem.Find the perimeter of the geometric figure.Triangle: sides 4r2 + 2r r3 + r2 + 2 7r + 8
A. r3 + 5r2 + 9r + 10
B. 5r3 + 10r + 10
C. r3 + 4r2 + 10r + 10
D. 5r3 + r2 + 9r + 10
Answer: A
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