Area and circumference of circles

Front

If my diameter is 19 inches, what is my radius?

Back

9.5 inches

Front

If my radius is 10ft, what is my diameter?

Back

20ft

Front

What is the circumference of this circle? Options: 3.14 cm, 37.68 cm, 24 cm, 68.4 cm

Back

37.68 cm

Front

A cruise ship has a large, circular window with a diameter of 6 meters. What is the window's area?

Back

28.26 m²

Front

Does this picture show the diameter or radius of a circle?

Back

Radius

Front

Is the red line a radius or diameter of the circle?

Back

Diameter

Front

How do you find the area of a circle?

Back

Front

Find the area of this Semicircle with a diameter of 18 cm

Back

127.17 cm

Front

Find the perimeter of the semicircular region. Round your answer to the nearest hundredth.

Back

23.13 m

Front

What is the area of the square that is not covered by the pink circle? (use 3.14 for pi)

Back

21.5 in²