Surface areas and volumes important problem(cubical related)|cbse maths in tamil|mensuration

A cubical block of side 10cm is surmounted by a hemisphere. What is the largest diameter that the hemisphere can have? Find the cost of painting the total surface area of the solid so formed at the rate of Rs.5 per 100sq.cm.(use pi =3.14) The above problem solution explained in tamil #hemisphere#cubical# thank you cbse maths in tamil