Circles

Gavin ordered a pizza that was 9 inches wide. If Gavin ate a quarter of the pizza, how many square inches of the pizza did he eat? Use 3.14 for π. Round the nearest hundredth. 

• a.  63.59 in²

• a.  20.25 in²

• a.  15.90 in²

• a.  13.13 in²

Tags

CCSS.7.G.B.4

The diameter of a bicycle tire is 2 feet. If the wheel revolves (spins all the way around) 50 times, how far will Raymond travel on the bicycle? Use 3.14 for π.

• 428 ft

• 314 ft

• 628 ft

• 514 ft

Tags

CCSS.3.MD.D.8

If you have been given diameter, how do you find radius?

• Diameter times 2

• Diameter plus 2

• Diameter divided by 2

• Diameter minus 2

Tags

CCSS.7.G.B.4

Identify the correct relationship between radius and diameter

• d = 2r

• r = 2d

• C = pi times d

• d = 1/2(r)

Tags

CCSS.7.G.B.4

The formula for finding the circumference of a circle is

• C = 2(pi)(radius)

• C = 2 (pi)

• C = Pi(pi)

• C = diameter times radius

Tags

CCSS.7.G.B.4

A circular swimming pool has a radius of 15 feet. The family that owns the swimming pool wants to put up a circular fence that is 5 feet away from the pool at all points. What is the circumference of the fence they will need? Hint: Draw what you know.

Tags

CCSS.7.G.B.4

What is the formula for finding the area of a circle?

Tags

CCSS.7.G.B.4

What is the m∠U?

• 38⁰

• 19⁰

• 76⁰

• 90⁰

Tags

CCSS.HSG.C.A.2

Find the measure of major arc PQ (the question mark).

• 260°

• 100°

• 25°

• 130°

Tags

CCSS.HSG.C.A.2

Find the measure of minor arc AV.

• 55°

• 115°

• 85°

• 95°

Tags

CCSS.HSG.C.A.2