Respuesta :

Answer:

5. A=314 ft. C=62.8 ft.

6. A=615.44 ft. C=87.92 ft.

7. A=254.34 km

8. A=379.94 yd

9. A=706.5 mi

10 A=1133.54 cm

Step-by-step explanation:

Area=

[tex]\pi {r}^{2} [/tex]

Circumference=

[tex]2\pi \: r[/tex]

Insert the given values.

Note: Diameter (d) = r + r

5. Circumference: 62.8 ft
Area: 314.1 ft^2

6. Circumference: 87.9 m
Area: 615.7 m^2

7. Area: 254.4 km^2

8. Area: 380.1 yd^2

9. Area: 706.8 mi^2

10. Area: 1,134.1 cm^2

Note: ^2 means the squared sign.

:)