Question

The area of circular ring formed by two concentric circles whose radii are 5.7cm and 4.3cm respectively

Answer 1

Answer:

A = 43.98 cm²

Step-by-step explanation:

given,                      

radii of the circular ring,

r₁ = 5.7 cm      

r₂ = 4.3 cm  

Area of the circular ring

A = π (r₁² - r₂²)

A = π (5.7² - 4.3²)

A = π x 14            

A = 43.98 cm²          

Area of the circular ring is equal to 43.98 cm²