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### Grade 7 - Mathematics9.8 Circumference of a Circle - II

 Example: The radius of a circle is 15 cm. Find its circumference. Solution: The circumference of the circle = 2pr. Given that, radius of a circle (r) = 15 cm. We know the value of p = 22/7 \ Circumference of the circle = 2 * 22/7 * 15 = 94.285714 cm. = 94.3 cm. (approximately) Directions: Read the above example carefully and answer the following questions. Also write at least 10 examples of your own.
 Q 1: Find the diameter of the circle if its circumference is given by 2.2 cm.3.1 cm0.7 cm0.35 cm2.2 cm Q 2: The radius of a circle is 5.25cm. Find its circumference.43.5 cm33 cm43 cm33.5 cm Q 3: The radius of a circle is 4.9 cm. Find its circumference.40 cm30.8 cm40.8 cm30 cm Q 4: Find the radius of a circle its circumference is given by 8.8 cm.4.8 cm6.8 cm1.4 cm7.8 cm Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!