The ratio of radius of two circle are 4:5 find the ratio of their areas and circumference
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the radius of two circles is 4:5
area of circle=π*r^2
circumference of circle=2πr
therefore,
the ratio of areas of given circle wil be 16:25
the ratio of circumference of given circles will be. 4:5
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Answer:
Let there radius be 4 x and 5 x
Ratio of circumference=
2 py 4x/ 2 py 5 x
= 4/5
Ratio of areas = py (4x)² / py (5x)²
= 16 x²/ 25 x²
=16/25
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