First, use front end rounding to estimate each answer. Then find the exact answer.There are 1728 cubic inches in a cubic foot. How many cubic inches are there in 
A. estimate: 1730 ? 27 = 46,710 cubic inches; exact: 46,656 cubic inches
B. estimate: 1730 ? 30 = 51,900 cubic inches; exact: 46,656 cubic inches
C. estimate: 1700 ? 30 = 51,000 cubic inches; exact: 46,656 cubic inches
D. estimate: 2000 ? 30 = 60,000 cubic inches; exact: 46,656 cubic inches
Answer: D
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