Question

the total surface area of a solid hemisphere is 462 CM square find its volume ​

Answer 1

Answer:

3πr^2 = 462 cm^2   ( given)

3*22/7*r^2 = 462

          r^2 =( 462*7)/(3*22)

          r^2 =49

          r=√49

          r= ±7

   but radius cannot be negative hence

       r= 7 cm

now we have to find volume of hemisphere

that is

volume =2/3πr^3

           = (2/3)*(22/7)*7*7*7

            =2156/3 cm^3   ANSWER