Circles Unit Assessment

What is the measure of the RADIUS of the circle?

• 2 units

• 1 unit

• 4 units

• 2.5 units

What is the diameter of the circle?

• 1 unit

• 2 units

• 4 units

• 2.5 units

What is the area of the circle? (check all that apply)

• 1∏ square units

• 3.14... square units

• 2 square units

• 2∏ square units

Tags

CCSS.7.G.B.4

What is the equation used to find the CIRCUMFERENCE of the circle?

• c=2(3.14)(2

• c=2(3.14)(1)

• c=(3.14)(1²)

• c=2(1)

Tags

CCSS.7.G.B.4

A circle has a radius of 50 centimeters. Which of these is closest to its area?

• 157 cm²

• 314 cm²

• 7,854 cm²

• 15,708 cm²

Tags

CCSS.7.G.B.4

A class measured the radius and circumference of various circular objects. The results are plotted in the graph.

Is there a proportional relationship between the radius & circumference? If so, what is the constant of proportionality?

• Yes, the constant of proportionality is 6

• No, there is no constant of proportionality

• Yes, the constant of proportionality is 44/7

• Yes, the constant of proportionality is 6.25

Tags

CCSS.7.RP.A.2B

Select ALL the expressions that correctly calculate the PERIMETER of the shape.

• 40 + 20∏

• 80 + 20∏

• 120 + 20∏

• 300 + 100∏

• 10 + 10 + 10∏ + 10 + 10 + 10∏

Tags

CCSS.3.MD.D.8

What is the perimeter of this figure, to the nearest WHOLE unit? (use 3.14 for ∏)

• 38 units

• 40 units

• 35 units

Tags

CCSS.3.MD.D.8

What is the area of the figure, to the nearest WHOLE square unit? (Use 3.14 for ∏)

• 95 square units

• 75 square units

• 125 square units

• 80 square units

Which would be needed to calculate the distance around a circular track?

• Area

• Circumference

• Volume