Question

Circumference and Area of Circles

Answer 1

Explanation:

Circumference for a circle equation is:
`2\pi r`

1. 31.4 in

2. 88 mm

3. 69.1 yd

4. 578.5 m

Area for circle equation is:
`\pi r^(2)`

5. 490.9 m^2

6. 227 ft^2

7. 35.8 mi^2

8. 86.6 cm^2

9. Area: 50.3 cm^2, circumference: 25.1 cm

10. Area: 69.4 in^2, circumference: 29.5 in

11. Area: 2.5 ft^2, circumference: 5.7 ft

12. Area: 36.3 km^2, circumference: 21.4 km

13. Area: 154 yd^2, circumference: 44 yd