Inscribed Circles (Handout J)

Front

What is the formula to calculate the diameter of a circle?

Back

Diameter = 2 × Radius

Front

If the radius of a circle is 10ft, what is the diameter?

Back

20ft

Front

What is the formula to calculate the radius of a circle?

Back

Radius = Diameter / 2

Front

If the diameter of a circle is 19 inches, what is the radius?

Back

9.5 inches

Front

What is the circumference of a circle?

Back

Circumference = π × Diameter

Front

If the diameter of a circle is 10ft, what is the circumference?

Back

31.4ft (using π ≈ 3.14)

Front

What is the relationship between radius and circumference?

Back

Circumference = 2 × π × Radius

Front

How do you find the circumference if you only have the radius?

Back

Circumference = 2 × π × Radius

Front

What is the value of π (Pi) approximately?

Back

π ≈ 3.14

Front

If a circular garden has a radius of 62.8ft, how much fencing is needed?

Back

394.24ft (Circumference = 2 × π × 62.8)