Question

the radius of two concentric circles are 19 cm and 16 cm find the area of the Ring enclosed between them

Answer 1

piR2-pir2=22/7(361-256=22/7(105)
=22*15=330

Answer 2

Answer:

Step-by-step explanation:

πR^2-πr^2

R=19 , r=16

π(R^2-r^2)

π(R+r)(R-r)

π*105

330cm^2