CBSE Guess > Papers > Question Papers > Class X > 2009 > Mathematics > Mathematics
Q. 10. The diameter of the base of a cone is 14 cm and its slant height is 25 cm. What is its vertical height? 1
Sol. Vertical height = 24 cm
WORKINGS
Complete solutions to the questions of Section A
are being given for your reference only.
SECTION B
Questions number 11 to 15 carry 2 marks each.
Q. 11. What real number should be subtracted from the polynomial 3x3 + 10x2 – 14x + 9 so that the polynomial 3x – 2 divides it exactly?
Sol.
5 should be subtracted from 3x3 + 10x2– 14x + 9 So that the polynomial (3x – 2) divides it exactly
Q. 12. Evaluate .
Sol.
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CBSE 2009 Question Papers Class X