Geometry Circles Intro

A major arc is denoted with 3 letters. Which of the following statements is also true of a major arc?

• Forms half a circle.

• Forms a whole circle.

• Measures greater than 180 degrees.

• Measures less than 180 degrees.

What is this called?

• Tangent Line

• Central Angle

• Chord

• Inscribed Angle

What formula is this used for:
πr²

• Circumference 

• Area

• Surface Area

• Volume

What formula is this used for:
πd

• Area

• Circumference 

• Surface Area

• Volume 

Diameter 32 inches
What is the radius?

• 16 inches

• 64 inches

• 96 inches
  96 inches

• 16 ft 

What formula is used to find the distance around a circle?

• Area

• Surface area

• Circumference

• Volume

Radius 5 in
Find the area of the circle.

• 15.7 inches²

• 31.4 inches²

• 314 inches²

• 78.5 inches²

Diameter 14 inches
Find the area of a circle.

• 615.44 in²

• 153.86 in²

• 43.96 in²

• 87.92 in²

Ray wants to build a fence around his circular garden outside. The garden has a radius of 6 ft. How many feet of fencing does he need?

• 37.68 ft

• 18.84 ft

• 113.04 ft

• 452.16 ft

Circle A has a radius of 6. Which circles are congruent to circle A? Check all that apply.

• Circle D

• Circle E

• Circle F

• Circle G

• Circle H