Question

The Area of ring is 528cm and the radius of outer circle is 17cm
Find the radius of smaller circle
Find the width of the ring

Answer 1

Answer:

Radius of smaller circle= √130 cm

Width of the ring= 17-√130

Step-by-step explanation:

Area of ring= π (R^2- r^2) = 528 cm^2

Radius if outer Circle = 17 cm

π(17^2-r^2)= 528

π (289- r^2) =528

22/7 (289-r^2)= 528

289-r^2 = 528*7/22

298-r^2 =168

r^2 = 298-168

r = √130 cm

Radius of smaller circle= √130 cm

Width of the ring= 17-√130

Answer 2

first question ka answer 11

seconds question ka answer 6

Hope this was helpful