CBSE Guess > Papers > Question Papers > Class X > 2009 > Mathematics > Mathematics

Sol.

Part I : See Theorem 6, Page (xxxii).

Part II : AP = AR = 7 cm …(Given theorem)
QC = RC = 5 cm …(Given theorem)
BP = AB – AP
= 10 – 7 = 3 cm
BQ = BP = 3 cm …(Given theorem)
 BC = BQ + QC = 3 + 5 = 8 cm

Q. 29. A bucket made up of a metal sheet is in the form of a frustum of a cone. The depth of the bucket is 24 cm and the diameters of the top and the bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill thebucket at the rate of Rs. 25 per litre.

Sol. Lower radius of the bucket,

Mathematics 2009 Question Papers Class X
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