Class VII A cone has a circular base of radius 6m and volume 84π m3. height of cone is 7m 6m 8m 8m A solid with a vertex and a base that is formed by a simple closed curve is a A solid with a vertex and a base that is formed by a simple closed curve is a Cone Pyramid Dice . VPQRS is rectangle based pyramid where PQ = 30cm, QR = 20cm and volume is 2000cm3, height is 20cm 40cm 10cm 30cm . Surface area of sphere is 2πr 4πr2 2πr2 6πr2 . Volume of sphere is (4/3)πr3 3⁄4rl 3.414ra None of above Do you really want to submit this quiz? Cancel Submit Quiz