Arc Length and Sector Area

Arc Length and Sector Area

ARC LENGTH

Multiple Choice

In a​ circle, a 90° sector has area 64π in². What is the radius of the​ circle?

• 16 in

• 32 in

• 64 in

• 128 in

Multiple Choice

If the length of the 45° region of this circle is  $10\Pi$   inches, what is the radius of the circle?

• 40 in.

•  $4\sqrt{5}$  in.

• 10 in.

• 20 in.

Multiple Choice

What is the area of the shaded region? Round to the nearest hundredth. (Hint: Area of a triangle is 1/2*b*h)

• 78.53

• 314.16

• 28.54

• 58.54

Multiple Choice

Calculate the length of the bold arc.

• 49.7 ft

• 15.8 ft

• 24.9 ft

• 3.14 ft

Multiple Choice

Calculate the area of the sector.

• 4248 m²

• 7.9 m²

• 2827.4 m²

• 11.8 m²

Multiple Choice

Calculate the area of the sector.

• 9.2 sq. in.

• 10.5 sq. in.

• 31.4 sq. in.

• 38.2 sq. in.

Multiple Choice

Calculate the length of the bold arc.

• 5040 cm

• 43 cm

• 44 cm

• 14 cm