Question

A doll is made by surmounting a cone on a hemisphere of equal radius. The radius of the hemisphere is 7cm and slant height of the cone is 11cm. Find the surface area of the doll

Answer 1

Answer:

550 sq .cm

Step-by-step explanation:

cone                              hemisphere

r = 7cm                             r  = 7 cm

l = 11cm

surface area of doll  =   csa of cone  + csa of  hemisphere

                                =  π r l    +  2 π r²

                                =  22/7 x 7 x 11     +  2 x 22/7 x 7 x7

                               =  242    +  308

                               = 550  cm²