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

Q. 30. A container in the shape of a frustum of a cone having diameters of its two circular faces as 35 cm and 30 cm and vertical height 14 cm, is completely filled with oil. If each cm3 of oil hasmass 1.2 g, then find the cost of oil in the container when it costs Rs. 40 per kg. 6

Sol. Lower radius of the container,

Mathematics 2009 Question Papers Class X
Delhi		Outside Delhi		Compartment Delhi		Outside Delhi		Foreign
	Set 1 (PDF)		Set 1 (PDF)		Set 1		Set 1		Set 1 (PDF)
					Set 2		Set 2
					Set 3		Set 3