Central angles, Arcs, and Sectors

The measure of the central angle is equal to the measure of the arc intercepted by its rays.

• always true

• sometimes true

• never true

Tags

CCSS.HSG.C.A.2

What is the area of a circle whose radius is 9cm?

• $9\pi\ cm^2$
  

• $18\pi\ cm^2$

• $40.5\pi\ cm^2$

• $81\pi\ cm^2$

Tags

CCSS.7.G.B.4

What is the circumference of a circle whose diameter is 16ft?

• $8\pi\ ft$

• $16\pi\ ft$

• $32\pi\ ft$

• $64\pi\ ft$

Tags

CCSS.7.G.B.4

Find the area of a circle, if its circumference is

 $15\pi\ cm$ .

•  $15\pi\ cm^2$  

•  $30\pi\ cm^2$  

•  $56.25\pi\ cm^2$  

•  $225\pi\ cm^2$  

Tags

CCSS.7.G.B.4

What is the measure of angle ARV?

Tags

CCSS.HSG.C.A.2

What is the measure of arc EV?

Tags

CCSS.HSG.C.A.2

What is the length of arc JA if RV is 8cm?

• $\frac{20\pi}{9}cm$

• $\frac{22\pi}{9}cm$

• $\frac{10\pi}{3}cm$

• $4\pi\ cm$

Tags

CCSS.HSG.C.B.5

Find the area of the sector ERI if JI is 18cm.

• $\frac{9\pi}{2}cm^2$

• $9\pi\ cm^2$

• $\frac{81\pi}{4}cm^2$

• $81\pi\ cm^2$

Tags

CCSS.HSG.C.B.5

Solve for the area of the shaded region if ER = 5cm.

• $\frac{5\pi\ -10}{2}cm^2$

• $\frac{5\pi\ -\ 10}{4}cm^2$

• $\frac{25\pi\ -\ 50}{2}cm^2$

• $\frac{25\pi\ -\ 50}{4}cm^2$

Tags

CCSS.HSG.C.B.5

What is the measure of angle JGO?

Tags

CCSS.HSG.C.A.2