Estimate by rounding as indicated.There are 27,878,400 square feet in one square mile. How many square feet are there in 33 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer.
A. Estimate: 900,000,000 sq ft; exact: 919,974,000 sq ft
B. Estimate: 840,000,000 sq ft; exact: 919,974,000 sq ft
C. Estimate: 900,000,000 sq ft; exact: 919,987,200 sq ft
D. Estimate: 840,000,000 sq ft; exact: 919,987,200 sq ft
Answer: C
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Solve the problem. Round your answer, if appropriate.Water is being drained from a container which has the shape of an inverted right circular cone. The container has a radius of 7.00 inches at the top and a height of 9.00 inches. At the instant when the water in the container is 8.00 inches deep, the surface level is falling at a rate of 1.4 in./sec. Find the rate at which water is being drained from the container.
A. 203 in.3/s B. 163 in.3/s C. 170 in.3/s D. 155 in.3s
Express the number in terms of j.
A. 10j
B. ±10
C. -j
D. -10j
Decide whether the statement is true or false.The sum of the interior angles of a regular heptagon is 900°.
A. True B. False
Use the prime factorization method to find the LCM of the given numbers.8, 16, and 22
A. 2816 B. 176 C. 22 D. 352