👤

Answer :

3. 9.5 (rounded)
4. 8 (rounded)
Shoopdawhoopdedogo

Answer:

3. 9.5 miles

4. 8 km

Step-by-step explanation:

3. Circumference formula for circle: C = 2πr

  • C means circumference
  • r means radius
  • π is 3.14

Plug in known value: 59.66 = 2(3.14)r

Solve for r:

  • Divide both sides by 2:

         29.83 = 3.14r

  • Divide both sides by 3.14:

         9.5 = r

Radius = 9.5 miles

4. Area formula for circle: A = πr²

201.1 = πr²

201.1 = 3.14r²

  • Divide both sides by 3.14:

64.04 = r²

  • Square root both sides:

√64.04 = √r²

8.002786 = r

About 8 km

Go Teaching: Other Questions