7 - Review of Circles

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 4.5 feet. What is the ring's circumference to the nearest hundredth?

• 9.00 ft

• 14.13 ft

• 14.14 ft

• 28.27 ft

If a circle has a radius of 16 ft. then which statement is true?

• The radius is 8 ft. 
•  The diameter is 8 ft
• The radius is 32 ft.
• The diameter is 32 ft.

If a circle has a diameter of 10 ft. then which statement is true?

• The radius is 5 ft. 
•  The diameter is 5 ft
• The radius is 20 ft.
• The diameter is 20 ft.

If you multiply π × d then you will get the...

• radius
• diameter
• circumference
• area

*Review!*

Solve:

6(5x - 3) + 2 = 14

• 2

• .5

• -1

• 1

*Review!*

Solve:

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

*Review!*

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

*Review!*

Solve for x:

8x - 10 = -34

• 4

• 3

• -3

• -24

Draw a circle with a radius of 2.4 cm. What is the diameter?

• 2.4 cm

• 4.8 cm

• 5.76 CM

What is the diameter of a circle with a radius of 5.5 cm?

• 5.5 cm

• 2.25 cm

• 11 cm

• 11 pi cm