A solid toy is in the form of a hemisphere surmounted by a right circular cone. If the height of the cone is 4 cm and diameter of base is 6 cm find volume and surface area of tiy
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1/3πr square height + 2/3πrcube
= 1/3*22/7*3 square* 4+2/3*22/7*3 cube
= 264/7 + 396/7
=660/7
=94.28cm square
surface area of toy= πrl +2πr square
=22/7*3*5+2*22/7*3
square
= 22/7*15+ 44/7*3
= 330/7 +132/7
=462/7
=66cm square
= 1/3*22/7*3 square* 4+2/3*22/7*3 cube
= 264/7 + 396/7
=660/7
=94.28cm square
surface area of toy= πrl +2πr square
=22/7*3*5+2*22/7*3
square
= 22/7*15+ 44/7*3
= 330/7 +132/7
=462/7
=66cm square
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