Circles MCQs with Answers

The perimeter of a semicircle is 144 cm, then the radius is:

• A.$7$ cm
• B.$14$ cm
• C.$21$ cm
• D.$28$ cm

Past Paper MCQ

If the circumference of a circle is equal to the perimeter of a square, then the area of the circle is:

• A.Equal to the area of the square
• B.Less than the area of the square
• C.Greater than the area of the square
• D.Cannot be determined

A pendulum-like swing at an amusement park moves in a circular arc at the end of a 49 meter arm. Find the distance traveled by a rider at the end of the swing's arm if the angle made between the two extreme points is $150^\circ$?

• A.$122.50\text{ m}$
• B.$125.67\text{ m}$
• C.$130.90\text{ m}$
• D.$128.33\text{ m}$

What is the ratio of the circumference of a circle to its radius?

• A.$\pi$
• B.$2\pi$
• C.$\frac{\pi}{2}$
• D.$\pi r$

The center of the circle $45x^2 + 45y^2 - 60x + 36y + 19 = 0$ is:

• A.$\left(\frac{2}{3}, -\frac{2}{5}\right)$
• B.$\left(-\frac{2}{3}, \frac{2}{5}\right)$
• C.$\left(\frac{2}{3}, \frac{2}{5}\right)$
• D.$\left(-\frac{2}{3}, -\frac{2}{5}\right)$

A line which meets the circle at exactly one point is called?

• A.Secant
• B.Chord
• C.Tangent
• D.Diameter

If the circumference of a circle is $154$ cm, its radius is approximately:

• A.$14$ cm
• B.$49$ cm
• C.$77$ cm
• D.$24.5$ cm

A line which is perpendicular to a radial segment of a circle at its outer end is called a?

• A.Secant
• B.Chord
• C.Tangent
• D.Diameter

An arc of length $6$ cm of a circle subtends an angle $\theta$ at the center $O$ of diameter $4$ cm. Find the value of $\theta$.

• A.$12$ radians
• B.$1.5$ radians
• C.$6$ radians
• D.$3$ radians

In a circle, the radius is made twice in length. The area of the circle will be increased by ?

• A.Two times
• B.Three times
• C.Four times
• D.Eight times