Circle Parts/Area/Circumference/Central Angle

Use the circle diagram provided. Name a radius. Select all that apply.

• RT

• ST

• PS

• QS

Use the circle diagram provided. Name a diameter.

• QS

• PS

• RT

• QR

Use the circle diagram provided. Name a chord that is not a diameter.

• PS

• ST

• RT

• QS

Use the circle diagram provided. Name a central angle.

• <RTS

• PS

• <QSP

• <QRS

Use the circle diagram provided. Name a minor arc.

• QS

• RS

• PRS

• RPS

Use the circle diagram provided. Name a major arc.

• PS

• QSR

• RQ

• RS

Use the circle diagram provided. Name a semicircle.

• QRS

• PS

• RSP

• QRP

Find the area and circumference of the circle with an 18 inch diameter. Round to the nearest tenth. Area = ​ (a)   Circumference = ​ ​ (b)  

• 1017.9
• 113.1
• 112.9
• 1087.3
• 987.3
• 114.6

Find the area and circumference of the circle with a 25 meter diameter. Round to the nearest tenth.

Area=​ (a)   Circumference=​ (b)  

• 490.9
• 78.5
• 399.3
• 412.6
• 67.5
• 71.8

If the area of a circle is 201.06 cm², find its diameter and circumference round to the nearest tenth.

Diameter=​ (a)   Circumference=​ (b)  

• 16
• 50.3
• 19.3
• 12.6
• 14.2
• 46.4
• 54.1