PERIMETER AND AREA OF CIRCLES

What is the circumference of this circle?

• 78.5 m

• 31.4 m

• 15.7 m

• 3.14 m

Daniel has a circular rug that has a diameter of 16 inches. How much space does the rug take up?

• 200.96 in

• 50.24 in

• 803.84 in

• 25.12 in

The line segment between the center and a point on the circle

• Radius

• Diameter

• Chord

• Tangent

What is the radius of this circle?

• 18 in

• 36 in

• 9 in

• 8 in

Find the area of the shaded region using the formulas.

• (4 x 8) + (3.14 x 1²)

• (3.14 x 1²) - (4 x 8)

• (4 x 8) - (3.14 x 2²)

• (4 x 8) - (3.14 x 1²)

Find the composite area.

• 72.12

• 146.24

• 96

• 121.12

The Cruz family is buying a custom-made cover for their swimming pool, shown above. The cover costs $2.95 per square foot. How much will the cover cost? Round to the nearest cent.

• $422.10
• $551.63
• $1,627.29
• $1,106.25

Choose the correct formulas for the circumference of the circle.

• 
  

  $C\ =\ 2\pi r$

• $C\ =\ 2\pi d$

• $C\ =\ \pi d$

The perimeter of a circle is also known as the ______of the circle

• area

• arc

• circumference

Ratio of circumference to diameter is a constant and it is denoted as ____.

• $pi\left(\pi\right)$

• $\inf inite\left(\infty\right)$

• $alpha\left(\alpha\right)$