Circles and Pi

The diameter of the circle is 92in. What is the radius of the circle?

• 92 in

• 45 in

• 3.14 in

• Answer is Not Here

What kind of number is

pi?

• rational

• irrational

the diameter of a circle is ______ the radius

• 10 times

• twice

• 3.14 times

• half

What is the radius?

• 66 in

• 22 in

• 33 in

• 132 in

What is the formula for finding the area of a circle?

• Area equals Pi times radius squared

• Area equals Pi times diameter

• Area equals 2 times Pi times radius

• Area equals 2 times Pi times diameter

What is the formula for finding the circumference of a circle in terms of the radius?

• Circumference equals Pi times radius squared

• Circumference equals Pi times diameter

• Circumference equals 2 times Pi times radius

• Circumference equals 2 times Pi times diameter

What is the formula for finding the area of a circle in terms of the radius?

• Area equals Pi times radius squared

• Area equals Pi times diameter

• Area equals 2 times Pi times radius

• Area equals 2 times Pi times diameter

What is the formula for finding the circumference of a circle with a given diameter?

• Circumference equals Pi times radius squared

• Circumference equals Pi times diameter

• Circumference equals 2 times Pi times radius

• Circumference equals 2 times Pi times diameter

What is the formula for finding the area of a circle with a given radius?

• Area equals Pi times radius squared

• Area equals Pi times diameter

• Area equals 2 times Pi times radius

• Area equals 2 times Pi times diameter

What is the formula for finding the circumference of a circle?

• Circumference equals Pi times radius squared

• Circumference equals Pi times diameter

• Circumference equals 2 times Pi times radius

• Circumference equals 2 times Pi times diameter