If AB is tangent to circle P at B, find Measure of angle 1

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 perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

If a is a nonzero real number then the reciprocal of a is