Area Circumference Challenge

Find the composite area.

• 72.12

• 146.24

• 96

• 121.12

What is the area of the shaded region?

Note: the cut-out is a quarter of a circle

• 4.8 cm²

• 5.3 cm²

• 8.4 cm²

• 7.1 cm²

What is the area of the shaded region?

• 98.7 cm²

• 119.3 cm²

• 122.4 cm²

• 158.5 cm²

What is the area of the shaded region?

• 23.1 cm²

• 5.1 cm²

• 17.4 cm²

• 37.3 cm²

How many cookies are there?

• 48 cookies

• 24 cookies

• 8 cookies

• 4 cookies

A ceiling fan is pictured above. The tip of one of the fan blades is labeled point A.  Point A is 28 inches away from the center of the fan. About how far does point A on the fan travel when the fan blades make one full revolution?

• 28 inches

• 56 inches

• 176 inches

• 88 inches

A circular mirror has a 2 inch frame around it. The mirror itself is 8 inches in diameter. What is the area of the frame? Use 3.14 for pi.

Find the circumference of the circle.

• 14.13 cm

• 63.56 cm

• 28.26 cm

• 127.17 cm

Identify the parts of the circle and show how you would find the area and circumference.

Groups:

(a) radius

,

(b) diameter

,

(c) circumference

,

(d) area

Find the circumference of the circle.

• 21.98

• 153.86

• 43.96

• 615.44