Question
Download Solution PDFThe area of a circle is 15400 cm2. What is the positive difference between the radius and the circumference of the circle? [Use π = \(\frac{22}{7}\)]
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The area of a circle is 15400 cm2.
Concept Used:
Area of circle = πr2
Circumference of circle = 2πr
Calculation:
Area of circle = πr2
⇒ πr2 = 15400
⇒ r2 = (15400 × 7)/22
⇒ r = 7 × 10 = 70 cm
Circumference of circle = 2πr
⇒ 2πr = 2 × 22/7 × 70 = 440 cm
Positive difference between radius and circumference = 440 - 70 = 370 cm
∴ Option 2 is the correct answer.
Last updated on May 28, 2025
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