Circumference & Area #3

_{What is the diameter?}

• 2.5 in

• 10 in

• 13.14 in

• 15.84 in

What is the radius of this circle?

• 3.14 in

• 8 in

• 9 in

• 18 in

Determine the radius of the penny

• 9.5 mm

• 29.83 mm

• 38 mm

• 119.32 mm

Which equation could you use to find the circumference of a circle with a radius of 15?

• C = 15π

• C = 2π15

• C = 15 ÷ π

• C = π x 15²

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

The homeowners association wants to enclose a circular playground in a fence. The need to find the amount of fencing they need to purchase.  Will they need the area or circumference of the playground?

• area
• circumference
• neither

Tags

CCSS.HSG.GMD.A.1

The distance around a circle (similar to perimeter) is the ______________.

• Area

• Circumference

• Diameter

• Radius

The two-dimensional space inside a circle is the ____________ of the circle.

• Area

• Circumference

• Diameter

• Radius

The radius of a circle is:

• half of the diameter.

• the distance from the center of a circle to an edge.

• half the distance across the circle.

• all of the above.

Circumference = π x ___________________

• Area

• Circle

• Diameter

• Radius