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NCERT Class 10 Mathematics Solutions: Chapter 12- Areas Related to Circles Exercise 12.1 Part 2
1. Given figure depicts an archery target marked with its five scoring areas from the centre outwards as Gold, Red, Blue, Black and White. The diameter of the region representing Gold score is and each of the other bands is wide. Find the area of each of the five scoring regions.
Answer:
Diameter of Gold circle (first circle)
Radius of first circle,
Each of the other bands is wide,
Radius of second circle,
Radius of third circle,
Radius of fourth circle,
Radius of fifth circle,
Area of gold region
Area of red region = Area of second circle - Area of first circle
Area of blue region = Area of third circle - Area of second circle
Area of black region = Area of fourth circle - Area of third circle
Area of white region = Area of fifth circle - Area of fourth circle