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### Geometry4.18 Area of a Circle - I

 Example: The radius of a circle is 4.9 cm. Find its area. Solution: Given that, The radius of circle (r) = 4.9 cm. The area of a circle = p r2. = 22/7 * (4.9)2 = 22/7 * 4.9 * 4.9 75.46 sq cm. Directions: Read the above example carefully and answer the following questions. Draw 10 different circles on sheet of paper and represent each with different color. Find the area of each of them.
 Q 1: The diameter of a circle is 21 cm. Find its area.34.65 sq cm346.5 sq cm3.465 sq cm3465 sq cm Q 2: The radius of a circle is 13.5 cm. Find its area.572.56 sq cm385.23 sq cm5.725 sq cm385.54 sq cm Q 3: Find the raduis of a circle whose area is given by 154 sq cm.5 cm7 cm10 cm6 cm Q 4: The radius of a circle is 1.4 cm. Find its area.0.616 sq cm61.6 sq cm6.16 sq cm616 sq cm Q 5: Find the radius of a circle whose area is given by 1.2474 sq cm.1.26 cm1.35 cm0.63 cm0.23 cm Q 6: Find the diameter of a circle whose area is given by 9.625 sq cm.4.5 cm1.75 cm3.5 cm1.86 cm Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!

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