Circle Quiz

What is the shape of a circle?

• Oval

• Square

• Round

• Triangle

What is the name of the line that passes through the center of a circle and divides it into two equal halves?

• radius

• perimeter

• diameter

• chord

What is the distance around a circle called?

• circumference

• perimeter

• radius

• diameter

What is the name of the point inside a circle that is the same distance from all points on the circle?

• edge

• perimeter

• center

• corner

If the radius of a circle is 5 cm, what is the diameter of the circle?

• 10 cm

• 7 cm

• 3 cm

• 15 cm

What is the formula to find the circumference of a circle?

• 2 * r

• π * r^2

• 3 * π * r

• 2 * π * r

If the circumference of a circle is 31.4 cm, what is its diameter?

• 20 cm

• 15 cm

• 10 cm

• 25 cm

What is the formula to find the area of a circle?

• πr^2

• πr^3

• πr

• 2πr

If the area of a circle is 78.5 sq. cm, what is its radius?

• 10

• 3.5

• 15

• 5

What is the name of the ratio of the circumference of a circle to its diameter?

• pi

• 3

• 2

• 4