Circumference and Area of Circles and Polygons

Which formula is used to find the area of this polygon?

• A = Πr²

• A = ½bh

• A = ½h(b_{1 +} b₂)

• A = bh

Find the area of the circle

• 56.52

• 254.34

• 1017.36

• 113.04

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Find the area of the shaded sector of circle O.  The radius is 6 inches and the central angle is 100°.  Express answer to the nearest tenth of a square inch.

• 9.2 sq. in.

• 10.5 sq. in.

• 31.4 sq. in.

• 38.2 sq. in.

Find the area.

• 534.6 u²

• 59.4 u²

• 267.3 u²

• 29.7 u²

FIND THE ARC LENGTH OF THE BOLDED ARC

• A

• B

• C

• D

What is the approximate area of the shaded region?

• 70 cm²

• 12 cm²

• 82 cm²

• 58 cm²

A line from the center of a regular polygon at right angles to any of its sides.

• apothem

• radius

• permimeter

• area

What is the area of the composite figure?

• 40 sq cm

• 65 sq cm

• 52.5 sq cm

• 25 sq cm

Find the area of the circle.

• 18.84 m²

• 113.04 m²

• 37.68 m²

• 452.16 m²