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RS Aggarwal & V Aggarwal - Mathematics

Exercise 13A

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Exercise 13B

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Exercise 13C

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Exercise 13D

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CCE Questions

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Formative Assessment (Unit Test)

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Q. 144.2( 5 Votes )

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Class 9th RS Aggarwal & V Aggarwal - Mathematics 13. Volume and Surface Area

Answer :

Given,

Curved surface area of cylinder = curved surface area of cone = 8:5

Let C.S.A of cylinder = 8x

C.S.A of cone = 5x

As mention above cone and cylinder have equal radius and equal height

100h² = 64h² + 64r²

100h² – 64h² = 64r²

36h² = 64r²

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