Circle c1 passes through the centre of circle c2 and is tangential to it. If the area of c1 is 4 cmsquare , then the area of c2 is ?
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The area of C2 is 16 cm^2
Step-by-step explanation:
Area of C1 = 4 cm^2
4 = πr1^2
√4/π = r1
Now r2 = 2r1
r2 = 2 x 2 / √π
= 4/√π
Now
Area of C2 = π x r2^2
= π x 4 x 4/π = 16 cm^2
Thus the area of C2 is 16 cm^2.
Also learn more
What are the properties of parallelogram?
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Answer :-
The area of C2 is 16 cm^2
Step-by-step explanation:
Area of C1 = 4 cm^2
4 = πr1^2
√4/π = r1
Now r2 = 2r1
r2 = 2 x 2 / √π
= 4/√π
Now
Area of C2 = π x r2^2
= π x 4 x 4/π = 16 cm^2
Thus the area of C2 is 16 cm^2.
Also learn more
What are the properties of parallelogram?
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