WORDED PROBLEM - SOLID AND HOLLOW SPHERES

a solid metal sphere is melted and recast into a hollow spherical shell whose outer radius is 20 cm. if the radius of the hollow interior of the shell is equal to the radius of the original sphere, what is the radius of the original sphere? #solidgeometry #geometry #solidmesuration #volume #sphere #hollow #solid #melted #cast #wordproblem #solved #cebuano #bisaya #math #engineering