Q 1: If the radii of a ring are 7 cm. and 2 cm. then the width is 5 cm. False True

Q 2: To find the area of a ring, the two circles of that ring need not be concentric. True False

Q 3: Formula for area of ring = p(R+r)W. False True

Q 4: If the radii of a ring are 10cm. and 5cm. respectively, then its area is 50 Sq.cm. True False

Q 5: Circumference of a circle = pd. False True

Q 6: The angle at the center of circle is 330°.
True False

Q 7: Perimeter of a circle = (36/14)d. False True

Q 8: To find area of ring, the difference between the radii is not essential. False True

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Question 10: This question is available to subscribers only!

