the ratio of circumstances and area of a circle is 2: 7Find its circumstances
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Answer: Circumference of circle = 44 units
Step-by-step explanation: Circumference of circle = 2πr
Area of circle = πr²
circumference of circle/area of circle = 2/7
2πr/πr² = 2/7
2/r = 2/7 (∵value of π is same and they are being divided
same as with radius of the circle)
by cross multiplication
2×7 = 2×r
r = 7 units
circumference of circle = 2πr = 2×22/7×7 = 44 units
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