March 20 - Area of Triangles and Polygons

Find the area of this triangle.

• 11.9 ft²

• 34.2 ft²

• 31.5 ft²

• 33.6 ft²

Find the area of the triangle.

• 30.5 cm²

• 31.3 cm²

• 29.5 cm²

• 32.4 cm²

Find the area of the given triangle.

• 32.1 km²

• 31.4 cm²

• 43.8 cm²

• 37.0 cm²

Which of these formulas can be used to find the area of a triangle?

• A = 1/2 a b sin C

• A = 1/2 a b sin A

• A = 1/2 a c sin C

• A = 1/2 a b sin B

Find the area of the given polygon.

• 15.6 in²

• 27 in²

• 23.4 in²

• 46.8 in²

Find the area of the given pentagon.

• 27.5 in²

• 24.7 in²

• 34.0 in²

• 55.1 in²

Find the area of the given hexagon.

• 43.3

• 166.3

• 259.8

• 332.6

If you draw a radius from the center of the polygon to each of the vertices, how many triangles would be formed and what would be the measure of the angles in those triangles?

• 12 triangles; 30, 75, 75

• 10 triangles; 36, 36, 108

• 12 triangles; 15, 82.5, 82.5

• 10 triangles; 36, 72, 72

Find the area

• 96 cm²
• 48 cm²
• 36 cm²
• 48 cm

Each side of the given regular pentagon is 9 m. Find the area of the shaded region.

• 13.5 m²

• 54 m²

• 67.5 m²

• 13.5 m²