One of the important question for the board exam class 10 from
mensuration chapter.This question is from r d sharma class 10 maths.
chapter-16.3 question number-5 maths r d sharma,mensuration.
In this question we have to find the capacity of the bucket given that
the radii of the circular ends of a conical bucket which is 45 cm high
be 28 cm and 7 cm.
Given,
Height of the conical bucket = 45 cm
Radii of the 2 circular ends of the conical bucket are 28 cm and 7 cm
So, r1 = 28 cm r2 = 7 cm
Volume of the conical bucket = 1/3 π(r12 + r22 + r1 r2 )h
= 1/3 π(282 + 72 + 28 × 7)45 = 15435π
Therefore, the volume/ capacity of the bucket is 48510 cm3.