Find:
a. the height of a glass cone with base radius 12.3 cm and volume 706 cm3
b. the radius of a spherical weather balloon with volume 73.62 m3
c. the base radius of a cone with height 6.2 cm and volume 203.9 cm3 .
d. A cylinder of resin has height equal to its diameter. Some of it is used to form a cone with the same height and diameter as the cylinder. Show that the remainder is the exact amount needed to form a sphere with the same diameter.