AREA OF SURFACES - Quiz

1) What is the diameter of the circle, if the area of the circle is 78.5cm²?

5 cm 10 cm 15 cm 5.5 cm

2) What is the area of the circle if the radius is 10 cm?

314 cm² 31.4 cm² 30.4 cm² 3.14 cm²

3) What is the radius of the semicircle, if the circumference of the semicircle is 28.26 cm?

5.49 cm 6.49 cm 8.5 cm 8.75 cm

4) What is the diameter of the semicircle, if the circumference of the semicircle is 21.98 cm?

8.55 cm 8 cm 7.55 cm 7 cm

5) What is the area of the semicircle, if the diameter is 14 cm?

70 cm² 76.93 cm² 75.06 cm² 86.93 cm²