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

Q 2: The angle at the center of circle is 330°.
False True

Q 3: Perimeter of a semicircle is 2pr.
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: To find area of ring, the difference between the radii is not essential. True False

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!

