Find the surface area of the cylinder in terms of pi

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

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

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?