Q 1: To find the area of a ring, the two circles of that ring need not be concentric. True False

Q 2: Perimeter of a semicircle is 2pr.
True False

Q 3: The angle at the center of circle is 330°.
False True

Q 4: Circumference of a circle = pd. False True

Q 5: To find area of ring, the difference between the radii is not essential. True False

Q 6: If the radii of a ring are 7 cm. and 2 cm. then the width is 5 cm. False True

Q 7: The semicircles of a circle are symmetric to diameter of a circle. True False

Q 8: Formula for area of ring = p(R+r)W. False True

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Question 10: This question is available to subscribers only!

