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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.0.35 cm3.1 cm0.7 cm2.2 cm Q 2: The radius of a circle is 5.25cm. Find its circumference.33.5 cm33 cm43 cm43.5 cm Q 3: The radius of a circle is 4.9 cm. Find its circumference.40 cm30 cm40.8 cm30.8 cm Q 4: The radius of a circle is (128/11) cm. Find its circumference.62 cm72 cm73.11 cm74.23 cm Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!