Unit 3 Lesson 1-6

Front

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

Back

Diameter = 2 x Radius

Front

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

Back

20ft

Front

What is the formula for the circumference of a circle?

Back

Circumference = π x Diameter

Front

If the diameter of a bowl is 14 cm, what is the circumference?

Back

43.98 cm

Front

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

Back

Perimeter = Circumference

Front

If the circumference of a circle is about 6.28 feet, what is the approximate perimeter?

Back

about 5.14 feet

Front

What is the formula for the area of a circle?

Back

Area = π x (Radius^2)

Front

If the area of a composite shape is 61ft², what is the area?

Back

61ft²

Front

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

Back

9.5 inches

Front

What is the relationship between radius and diameter?

Back

The radius is half of the diameter.