AREA OF SURFACES - Practice Mode

1) What is the radius of the circle if the angle of sector is 90 Degree and the area of the circle is 196 cm²?

15.77 cm 15 cm 14.85 cm 14.95 cm

Correct Answer: 15.77 cm

2) What is the area of the sector, whose diameter is 40 mm and angle is 120 Degree?

418.66 mm<sup>2</sup> 400.50 mm<sup>2</sup> 415.5 mm<sup>2</sup> 416.6 mm<sup>2</sup>

Correct Answer: 418.66 mm<sup>2</sup>

3) What is the length of arc of a sector, whose radius is 15 cm and angle is 40 Degree?

9.75 cm 9.8 cm 10.60 cm 10.4 cm

Correct Answer: 10.4 cm

4) What is the length of arc of a sector whose radius is 3.6 cm and angle is 36 Degree?

2.10 cm 2.26 cm 22.6 cm 21.0 cm

Correct Answer: 2.26 cm

5) What is the area of the circle, whose diameter is 50 cm?

1900 cm<sup>2</sup> 1950 cm<sup>2</sup> 1962.5 cm<sup>2</sup> 1960 cm<sup>2</sup>

Correct Answer: 1962.5 cm<sup>2</sup>

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