Question

a rectangular solid whose edges are 4 cm, 5 cm, and 7cm is inscribed in a sphere., Find the volume and the surface area of the sphere.

Answer 1

Assuming length of solid=7 cm
Width=5 cm
Diagonal of base=sqrt(7 sqre+5sqre)=sqrt(49+25)=sqrt74
Height=4 cm
Diagonal of solid=sqrt(sqre(sqrt74)+4 sqre)=sqrt(74+16)=sqrt90
Diagonal of sphere d=sqrt90=3 sqrt 10
Radius of sphere r=(3 sqrt 10 )/2
Volume of sphere V =4/3( pi r cube )=?
Surface area of sphere A=4 pi r sqre )=?

Answer 2

i think u are missing one thing