Geo Ch 11

Multiple Choice

What is the circumference of a circle with a radius of 9 centimeters?

• 56.55 cm

• 28.27 cm

• 254.47 cm

Multiple Choice

What is the radius of a circle with a circumference of 26 meters?

• 4.14 m

• 8.28 m

• 40.84 m

• 163.36 m

​ Arc Length. = measure of arc

Circumference. 360

Multiple Choice

Find the length of the red arc.

• 8.38 cm

• 4.19 cm

• 16.76 cm

Multiple Choice

What is the measure of arc RS?

• 165

• 11.73

• 330

​Degrees don't have pi!

Radians have pi!

Multiple Choice

Convert 15° to radians

• $$\frac{\pi}{12}$$

• 0.26

• 1718.88

• $$\frac{5400}{\pi}$$

Multiple Choice

Convert $$\frac{4\pi}{3}$$ radians to degrees

• 240

• 1507.96

• $$480\pi$$

Multiple Choice

Find the area of a circle with a radius of 2.5 centimeters.

• 19.63

• 15.71

• 7.85

• 78.54

Multiple Choice

Find the diameter of a circle with an area of 113.1 square centimeters.

• 12

• 6

• 18

• 36

​ Area of Sector = Measure of arc

Area of Circle. 360

Multiple Choice

Find the area of the red sector.

• 265.07

• 441.79

• 35.34

Multiple Choice

What is the area?

• 27.5

• 55

• 6.88

• 13.75

Multiple Choice

What is the area?

• 120

• 240

• 60

• 30

​The measure of a central angle is 360 divided by number of sides.

Multiple Choice

What is the measure of angle AFB?

• 72

• 36

• 90

• 54

Multiple Choice

What is the measure of angle AFG?

• 72

• 36

• 90

• 54

Multiple Choice

What is the measure of angle GAF?

• 72

• 36

• 90

• 54

Multiple Choice

When we make a right triangle to calculate the apothem, what number other than 19.6 will we use?

• 15

• 7.5

• 9.8

• 30

Multiple Choice

Which of these is NOT a polyhedron?

​B = area of base

The base could be any polygon: triangle, square, rectangle, regular pentagon, etc.

Multiple Choice

What is the volume?

• 12

• 24

• 6

Multiple Choice

Find the volume.

• 1526.81

• 87.96

• 615.75