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 (Marathi)

Course: Class 10 (Marathi) > Unit 11

Lesson 4: Perimeter of circular figures
Math
Class 10 (Marathi)
Surface area and volume
Perimeter of circular figures
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Perimeter of shapes with arcs

Google Classroom
You might need: Calculator

Problem

Two equal semicircles of radius 4, start text, space, c, m, end text fit inside a larger semicircle of radius 8, start text, space, c, m, end text.
Find the perimeter of the shape.
Note: Enter your answer in terms of pi.
  • 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, space, c, m, end text
Stuck?
Stuck?