The surface area of a sphere is 64 pi square inches. which equation can be used to solve for the radius of the sphere a. 64pi = 4pi b. 64pi = 2pi r^3 c. 64pi = 2pi r^2 d. 64pi = 4pi r^2

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

What is the average diastolic blood pressure for adults