Question

a cubical block of side 7 cm is surmounted by a hemisphere what is the greatest diameter the hemisphere can have find, the surface area of the solids

Answer 1

Hope it helps mate:)

Answer 2

given
edges of cubical block=7cm
greatest diameterof the hemisphere =edge of cube=7cm
R of hemi=7/2=3.5
surface area of hemi=surface of area of the cube
CSA of the hemi-base arwa of hemi
=6×7×7+22/7×3.5×3.5
=294+38.5