find the circumference of the circle inscribed in a square of side 2a units
Answers
Answered by
7
Step-by-step explanation:
The diameter of inner circle is 2a
The radius is a
The diameter of outer circle is 2
2
a
The radius is
2
a
The circumference of inner circle is 2πr
2π(2a)=4πa
The circumference of outer circle is 2πr
2π(2
2
a)=4
2
πa
The ratio of circumferences is 4πa
2
:4
2
πa
2
1:
2
The area of inner circle is πr
2
π(2a)
2
=4πa
2
The area of outer circle is πr
2
π(2
2
)
2
=8πa
2
The ratio of areas is 4πa
2
:8πa
2
=1:2
Answered by
1
Answer
The diameter of inner circle is 2aThe radius is aThe diameter.Radius of a incircle ,r = a. Radius of circumcircle ,R = √2a.
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