Q. 4 C4.5( 4 Votes )

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Answer :

Surface area of toy = Area of hemisphere + Area of cylinder + area of cone


Area of hemisphere




= 628cm2


Height of cone = 60 - 10 = 40cm


Area of cylinder = 2 π × r × h


= 2× 3.14×10×40


= 2512cm2


Height of cone = 10cm


Radius of base of cone = 10cm




Area of cone = π × r × l


= π × 10 × 14.1


= 443cm2


Total area = 628 + 2512 + 443 = 3583 cm2


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