The circumference of the base of the cone is 8.5π inches. What is the volume of the cone in terms of π? Round to the nearest hundredth. Enter your answer in the box.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Rationalize the denominator- 12x/√x-10

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?