If a right circular cone has an area of base equal to 50 π sq. units. And volume of 500 π cu. units, find the radius of the base , the altitude, and the slant height of the cone.

An airplane wing casts a shadow on the ramp that is 12 ft. wide at one end, 7 ft. wide at the other And 33 ft long. How many square ft. of the ramp are covered by the shadow?

Find the approximate area of a semicircle, with a 5 in radius? A 16 in? 38 in? 5 in. ® 15 in? D 79 in²

How many square inches of sheet copper are needed to cover the inside wall of a cylindrical tank 6 ft high with a 9­in. radius? (Hint: change the altitude to inches.). Round to the nearest square inch.?