Circles

What is the diameter? d = r x 2

• 5 in

• 10 in

• 3.14 in

• 15.84 in

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the radius? r = d ÷ 2

• 18

• 72

• 38

• 14

what is the circumference of this circle ? C = π x d

• 3.14 cm

• 37.68 cm

• 24 cm

• 68.4 cm

Find the circumference (to the nearest whole number)

C = 2 X π x r

• 88 in

• 44 in

• 116 square in

• None of the above

The diameter of a circle is 3 centimeters. What is the circumference? C=π x d

• 11.5cm

• 9.42 cm

• unicorns are narwahls

• 45.3 cm

What is the formula for circumference of a circle given the diameter?

• C = π x r

• C = 2 x π x r

• C = π X d

• C = π x 2D

What is the formula for circumference of a circle given the radius?

• C = π x r

• C = 2 x π x r

• C = π x d

• C = 2 x π x d

What is the circumference? C=πD

• 36

• 18

• 108

• 113