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Areas Related to Circles Quiz

Class X
Mathematics
Areas Related to Circles
11 questions
MEDIUM

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1. What is the formula for the area of a circle?

πr^2 · 2πr · πd · r^2

2. If the radius of a circle is doubled, how does the area change?

Remains the same · Doubles · Increases four times · Increases three times

3. What is the circumference of a circle with a diameter of 14 cm?

14π cm · 28π cm · 7π cm · 21π cm

4. The area of a semicircle is given by which formula?

πr^2/2 · πr^2 · 2πr · πd/2

5. What is the area of a circle with a radius of 7 cm?

49π cm² · 14π cm² · 21π cm² · 28π cm²