If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Class 10 math (India)

Course: Class 10 math (India) > Unit 12

Lesson 3: Frustum of a cone
Math
Class 10 math (India)
Surface areas and volumes
Frustum of a cone
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Frustum (advanced)

Google Classroom
You might need: Calculator

Problem

A bucket opened at the top is in the form of a frustum. It has a capacity of 9100, pi, start text, c, m, end text, cubed.
The upper and lower circular ends are 60, start text, c, m, end text and 20, start text, c, m, end text in diameter respectively.
Find the area of the sheet used to make the bucket.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
pi, start text, c, m, end text, squared
Stuck?
Stuck?