1. In a given circle, the radius is 9 cm. What is its diameter? A. 18 m B. 18 cm C. 4.5 m D. 4.5 cm 2. Which of the following is the formula in solving for the area of a circle? A. A=2 TT B. A= T r2 C. A=id D. A=2 TT 12 3. The diameter of a circle is 8 cm, what is its area? A. 50.24 cm2 B. 200.96 cm2 C. 25.12 cm2 D. 100.48 cm2 4. What is the radius of a circle if the area is 36 m2 ? A.0.339 m B. 3.39 m C. 33.9 m D. 339 m 5. What is the area of a circle if the radius is 5m ? A. 15.7 m2 B. 31.4 m2 C. 78.5 m2 D. 157 m2​
