Two solid hemisphere of radius 9 cm and 7 cm respectively are melted to form a metallic cone of radius 15 cm, what is the height of the cone (in cm)

Two solid hemisphere of radius 9 cm and 7 cm respectively are melted to form a metallic cone of radius 15 cm, what is the height of the cone (in cm)

(a)          9.52 cm

(b)          8.76 cm

(c)           7.64 cm

(d)          8.52 cm

Sol:

h = 9.52 cm.