Question

A playing top is shaped tath by a
cone surmounted by a hemisphere the
entire top is 5cm in height. The diameter
of top is 3.5 cm Find its entire surface
area. ​

Answer 1

Required Area = CSA of Cone + CSA of hemisphere

l = √h² + r²

l = √ (5)² + (3.5)²

l = √ 25 + 12.25

l = √ 37.25

l = 6.1 cm

Required Area = πrl + 2πr²

Required Area = πr( l + 2r )

Required Area = 22/7 x 35/10 ( 6.1 + 2 × 3.5)

Required Area = 11 ( 13.1)

Required Area = 144.1 cm² Ans

Answer 2

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solution was in the attachment.