Solve the problem.For a cone, the formula r = 
describes the relationship between the radius r of the base, the volume V, and the height h. Find the volume if the radius is 7 inches and the cone is 9 inches high. (Use 3.14 as an approximation for ?, and round to the nearest tenth.)
A. 51.3 cubic in.
B. 65.9 cubic in.
C. 461.6 cubic in.
D. 4154.2 cubic in.
Answer: C
Mathematics
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Find an equation of a parabola that satisfies the given conditions.Focus (5, -5), directrix y = -9
A. (y + 5)2 = 8(x - 5) B. (x + 5)2 = 8(y + 7) C. (x - 5)2 = 8(y + 7) D. (x - 5)2 = 8(y + 5)
Mathematics
Write true or false for the statement.1 meter = 0.01 centimeter
A. True B. False
Mathematics
Solve.The perimeter of a triangle is 48 centimeters. Find the lengths of its sides, if the longest side is 6 centimeters longer than the shortest side, and the remaining side is 3 centimeters longer than the shortest side.
A. 16 cm, 19 cm, 22 cm B. 13 cm, 16 cm, 22 cm C. 7 cm, 10 cm, 13 cm D. 13 cm, 16 cm, 19 cm
Mathematics
Evaluate the expression.x + y, where x = 3 and y = 2
A. 5 B. -5 C. -1 D. 1
Mathematics