The Total solution for NCERT class 6-12
(i) Radius of hemisphere = 10 cm∴ Totalsurface area of hemisphere = 2πr2= 2 x 3.14 x 10 x 10 cm2= 628 cm2(ii) Total surface area of solid hemisphere= 3πr2 = 3 x 3.14 x 10 x 10 cm2= 942 cm2