Area of Concentric Circles and Circular Rings

Questions

1. MultiChoice

   Outer radius R = 5 cm, inner radius r = 3 cm. Find the area of the ring between them. (Use pi = 3.14)

2. MultiChoice

   Find the area of a circular ring with outer radius 10 cm and inner radius 6 cm. (Use pi = 3.14)

3. MultiChoice

   Calculate the area between concentric circles with radii 7 cm and 4 cm. (Use pi = 3.14)

4. MultiChoice

   Outer diameter D = 20 cm, inner diameter d = 10 cm. Find the area of the ring. (Use pi = 3.14)

5. MultiChoice

   Find the area of a washer with outer radius 14 cm and inner radius 7 cm. (Use pi = 22/7)

6. MultiChoice

   Outer radius R = 8 cm, inner radius r = 5 cm. Calculate the area of the shaded ring. (Use pi = 3.14)

7. MultiChoice

   A circular track has outer radius 15 m and inner radius 10 m. Find track surface area. (Use pi = 3.14)

8. MultiChoice

   Concentric circles have radii 6 cm and 2 cm. Find the area between them in terms of pi.

9. MultiChoice

   Two circles share a center with R = 10 cm and r = 8 cm. What is the area of the annulus in terms of pi?

10. MultiChoice

    Outer diameter is 16 cm and inner diameter is 12 cm. What is the area of the ring? (Use pi = 3.14)

11. MultiChoice

    Find the area between concentric circles with R = 9 cm and r = 3 cm in terms of pi.

12. MultiChoice

    A metal washer has outer radius 2 cm and inner radius 1 cm. What is its top area? (Use pi = 3.14)