volume of a hemisphere is 19404 cu . cm . its radius is :
sol . let the radius be r cm . then , 2 / 3 * 22 / 7 * r ³ = 19404 ⇔ r ³ = [ 19404 * 21 / 44 ] = ( 21 ) ³ ⇔ r = 21 cm . answer c
power(divide(19404, divide(multiply(const_2, const_pi), const_3)), divide(const_1, const_3))