Review Geometry 11.3, 11.4, 11.5 and 11.7

Find the area of a triangle with vertices A(0, 2), B(8, 2), and C(4, –3).

• 17

• 20

• 15

• 19

What is the length of arc AB?

• about 2.45 m

• about 28.27 m

• about 9.77 m

• about 68.42 m

• about 34.21 m

What is the circumference of a circle with a radius of 4.2 inches?

• 13.2 in.

• 6.6 in.

• 8.4 in.

• 55.4 in.

• 26.4 in

What is the area of the shaded region in the diagram below?

• about 19.72 cm²

• about 14.59 cm²

• about 12.33 cm²

• about 10.27 cm²

• ^about 8.11 cm²