Where a circular arc of radius 6 cm has been drawn with vertex O of an equilateral triangle OAB of side 12 cm as centre. NCERT Class 10 Math’s Chapter 12 Page No. 235 Exercise 12.3 Question No. 4

The diameter of the region representing Gold score is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions. NCERT Class 10 Chapter 12 AREAS RELATED TO CIRCLES