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Find the circumference of the circle inscribed in a square of side 2a units. |
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Answer» Answer: 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 Explanation: |
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