10.1 Circles

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

what is the exact circumference of this circle ?

• 3.14 cm

• 12π cm

• 37.68 cm

• 6π cm

Tags

CCSS.7.G.B.4

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

Tags

CCSS.HSG.GMD.A.1

What do we call the red line?

• Chord
• Arc
• Diameter
• Segment

Tags

CCSS.HSG.C.A.2

Choose the best description of the image.

• The circle is inscribed in the square.

• The square is inscribed in the circle.

• The square is circumscribed about the circle.

If the perimeter of the square is 40 in, find the exact circumference of the circle.

• 40π in

• 10√2 in

• 10π in

• 10π√2 in

Tags

CCSS.7.G.B.4

Which of the following is NOT the formula for the circumference of a circle?

• πr²

• 2πr

• πd

Tags

CCSS.7.G.B.4

1)  Which of the following lines are considered the radii? Only one correct answer. 

• PR
• PT
• QS
• RS

1)  Circumference is

• The distance across the circle
•  distance around the circle
• The length of the diameter times the radius