Question

O is the centre of the two concentric circles in the given figure. OL is the radius of the inner circle and OC is the radius of the outer circle. OC = 5 cm, LC = 2 cm. What is the area between the two circles? - С​

Answer 1

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Answer:

50.24 $cm^{2}$

Step-by-step explanation:

So, there are 2 radii,

Area of a circle = πr^2

Let π = 3.14

The Area between the circles =

(Area of Big Circle) - (Area of Small Circle)

(π*OC*OC) - (π*OL*OL)  ...[radius*radius = radius^2]

(π*5*5) - (π*3*3)  ...[OL = OC-LC = 5-2 = 3]

(78.5) - (28.26)

50.24 $cm^{2}$