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A right circular cone is 3.6 cm high and...

A right circular cone is 3.6 cm high and radius of its base is 1.6 cm. It is melted and recast into a right circular cone with radius of its base as 1.2 cm. Find its height.

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The correct Answer is:
`6.4cm`
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ICSE-REVISION PAPER -3 -SECTION - B
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  2. A right circular cone is 3.6 cm high and radius of its base is 1.6 ...

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  7. In a positive fraction, the denominator is greater than the numerator ...

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  8. Solve : (i) (x^(2)-x)^(2)+5(x^(2)-x)+4=0 (ii) (x^(2)-3x)^(2)-16(x^...

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  9. If -5 is a root of the quadratic equation 2x^2+p x-15=0 and the quadra...

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  10. There are three containers of equal capacity and all are completely fi...

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  11. A straight line passes through the points A(-5, 2) and B(3,-6). It int...

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  12. A straight line passes through the points A(-5, 2) and B(3,6). It inte...

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  13. A straight line passes through the points A(-5, 2) and B(3,6). It inte...

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  14. If (7a + 8b)/( 7c + 8d) = (7a - 8b)/(7c - 8d), prove that : a:b= c:d

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  15. If (7a + 8b)/( 7c + 8d) = (7a - 8b)/(7c - 8d), prove that : (i)a:b=c...

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  16. Calculate the ratio in which the line joining A(5, 6) and B(-3, 4) is ...

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  17. The speed of a boat in still water is 15 km/hr. It can go 30 km ups...

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  18. Prove that : sin A (1 + tan A) + cos A (1 + cot A) = sec A + cosec A.

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  19. If x in W, find the solution set of (3)/(5) x - ( 2x -1)/(3) gt1.

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  20. The figure alongside shows a circle with centre 0. Chord ED is paralle...

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