Solve.The area of a triangular poster is 870 square centimeters. Its altitude is 2 feet shorter than twice its base. Find the lengths of the altitude and base.
A. base = 60 cm; altitude = 14.5 cm
B. base = 15 cm; altitude = 58 cm
C. base = 30 cm; altitude = 58 cm
D. base = 30 cm; altitude = 29 cm
Answer: C
Mathematics
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