Question

A solid metallic sphere of diameter 30 cm is melted and recast into 6 identical solid right
circular cones of height 10 cm each. Find the diameter of the base of each cone.
What is the mass of one of these cones if the density of metal is 2.1 g per cm

Answer 1

Answer:

The tip of the minute hand moves around a complete circle in 1 hour (that is, 60 minutes)

Answer 2

Answer:

Given,

Diameter of metallic sphere D=28 cm

Diameter of circular base of smaller cone d=432 cm=314 cm

Hight of cone h=3 cm

Hence, 

Radius of metallic sphere R=2D=14 cm

Radius of circular base of smaller cone r=2d=37 cm

Volume of metallic sphere V=34πR3

                                               

                                                 =34×722×(14)3 cm3

                                               

                                                 =34×722×(14)3 cm3

                                                

                                                 =2188×2744 cm3

                                                

                                                 =88×130.667 cm3

.

 Volume of metallic sphere V=11498.667 cm3

Volume of one cone v=