Please solve question no.28.

Dear student,
Answer for part 1 of Q28 is provided below. For further questions please repost questions in separate threads for rapid assistance.
Given,
AC = 8 cm & AB = 3 cm
AC is the radius of the bigger circle & BC is the radius of inner circle.
BC = AC - AB  
BC =  8 - 3  
BC = 5 cm
Radius of inner circle, r = 5 cm
Radius of bigger circle , R = 8 cm
Area of shaded region ,A = Area of bigger circle -  Area of inner circle
A = πR² - πr²
A = π(R² - r²)
A = 22/7 (8² - 5)
A = 22/7 (64 - 25)
A = 22/7 × 39
A = (22×39)/7
A = 858/7  
A = 122.57 cm²
Area of shaded region = 122.57 cm²
Hence, the area of shaded region is 122.57 cm²
Regards.

  • 0
What are you looking for?