Final Exam Review _ Exploring Circles and Probability

• 15.7 cm

• 31.4 cm

• 78.5 cm

• 62.8 cm

A rectangle is enlarged by a scale factor of 3. If the original length is 4 cm, what is the new length?

• 7 cm

• 12 cm

• 9 cm

• 1.33 cm

What is the probability of rolling a 4 on a standard six-sided die?

If a car travels 180 miles in 3 hours, what is its unit rate in miles per hour?

• 60 mph

• 90 mph

• 30 mph

• 45 mph

If the radius of a circle is doubled, by what factor does the area increase?

• 2

• 3

• 4

• 8

• 21.98 cm

• 43.96 cm

• 153.86 cm

• 14 cm

A triangle has sides of 3 cm, 4 cm, and 5 cm. If a scale factor of 2 is applied, what is the length of the longest side in the new triangle?

• 5 cm

• 8 cm

• 10 cm

• 6 cm

What is the probability of flipping a coin and getting heads?

• 1

• 0

If 5 pencils cost $2.50, what is the unit rate per pencil?

• $0.25

• $0.50

• $2.00

• $1.00