Central Angles and Arc Length Finding Radius

The length of an arc is 18cm and the radius of the circle is 6cm. What is the radian measure of the central angle?

• 3 radian

• 2 radian

• 4 radian

• 2π radian

Tags

CCSS.HSF.TF.A.1

A central angle measure 4.5 radians and has an arc of 35 inches. What is the radius of the circle?

• 7.78 inches

• 8.21 inches

• 157.5 inches

• 7 inches

Tags

CCSS.HSG.C.B.5

• 12π cm

• 27π cm

• 12 cm

• 27 cm

Tags

CCSS.HSG.C.B.5

A circle has radius 12 inches. A central angle intercepts an arc of length 36 inches. What is the radian measure of the central angle?

• 3 radian

• 2 radian

• 6 radian

• 9 radian

Tags

CCSS.HSF.TF.A.1

Find the arc length.

• 3π/4 ft

• 39π/4 ft

• 13π/4 ft

• 4π/13 ft

Tags

CCSS.HSG.C.B.5

Find the arc length

• 7 cm

• 28π cm

• 7π cm

• 28 cm

Tags

CCSS.HSG.C.B.5

Find the arc length

• 12π cm

• 15π cm

• 39.375 cm

• 14π cm

Tags

CCSS.HSG.C.B.5

Find arc length

• 114π/5 ft

• 2850 ft

• 95π/6 ft

• 150π/19 ft

Tags

CCSS.HSG.C.B.5

Arc Length Formula:

• Radius×Radian

• Radius×Degree

• Radius×Radius

• Radian×Radian

Tags

CCSS.HSG.C.B.5

The diameter of a circle is 8 centimeters. A central angle of the circle intercepts an arc of 12 centimeters. What is the radian measure of the angle?

• 3

• 4

• 8π

• 3/2

Tags

CCSS.HSF.TF.A.1