Question

A sphere of radius 2.1cm is melted to recast into a cone of height 8.4cm then find the radius.​

Answer 1

Answer:

Step-by-step explanation:

volume of sphere = 4/3*22/7*r*r*r

                             =4/3*22/7*2.1*2.1*2.1

volume of cone = 1/3 *22/7*r*r*h

                           =1/3*22/7*r*r*8.4

volume of sphere = volume of cone

4/3*22/7*2.1*2.1*2.1=1/3*22/7*r*r*8.4

4/3*2.1*2.1*2.1         = 1/3*r*r*8.4

                    r*r       = 2.1*2.1

                    r  =2.1 cm

HOPE IT HELPS