Ready Math Lesson

7th Grade Math

​What is pi?

Pi, is the infinite number that is going to be calculated forever!!!

What is the calculation for pi?

The estimate for pi is 3.14. The symbol for pi is π. Pi can me infinite. No one can get the final calculation for pi.

Multiple Choice

What is the common estimation of pi?

• 3.14159
• 3.14
• 3.142
• 3.1416

Circles

What is the circumference of a circle?

The circumference of a circle is the outside of the circle, like perimeter.The circumference of a circle is 2πr.

Multiple Choice

What is the equation for circumfrence?

• C = 2πr
• C = πd
• C = 4r
• C = 2r + π

Multiple Select

Name the center point/origin

• center
• midpoint
• nucleus
• origin

Multiple Choice

Find the circumference equation

• C = π * r^2
• C = 2 * r
• C = π * d
• C = 2 * π * r

Multiple Select

Find the diameter

• Diameter = 2 * Radius
• 10

• Diameter = 3 * Radius
• Diameter = Radius

Multiple Select

Find the radius

• Radius = diameter * 2
• 20

• Radius = diameter / 2 or Radius = circumference / (2 * π)
• Radius = diameter + circumference

Multiple Choice

DID YOU LEARN???

• Yes, I learned a lot!!

• Learning is overrated.
• I didn't understand anything.
• No, I forgot.