6th Grade Math Textbook, Progress

Find the area. Use 3.14 or^272 for
.Estimate to help.

1. 
   
   
   
   2. 
      
      
      
      3. 
         
      
      
      
      
   
   
   
   


2. r
   3 in. 5. r
   10 cm 6.r
   7 km 7. r
   14 m


3. d
   40 yd 9. d
   35 mm 10.r
   28 ft 11. r
   36 km


4. r
   0.6 m 13. r
   1.5 cm 14. r
   3 ^12 yd 15. d
   21 ft

Find the area of the shaded region.

5 ft

10 m 14 yd

19. A designer has a circular piece 20. The length of a diameter
    of canvas with a radius that of a metal jar lid is 4.2 cm.
    measures 50 cm. Find its area. Find its area.


20. A circular rug is 4 m across. 22. A circular metal part for a machine
    What is the distance around has a radius 0.1 mm long. Find the
    the rug? total area of 100 of these parts.

Find the area of each circle in terms of p.

23. r
    2 cm


24. r
    5 ft 25. r
    7 yd 26.r
    9 in. 27. r
    10 m

A
 r^2 A
 (2 cm)^2 A
 4 cm^2

6 in.

3 in.

4 m

12 m

6 yd

15 yd

8206-2_472-473 3/23/06 2:39 AM Page 473