Area of Shapes and Circles

What is the formula for the Area of a Semi-circle?

To find the area of a shaded region, you should . . .

• add the area of the outside shape with the inside shape.

• subtract the area of the outside shape from the inside shape.

• subtract the area of the inside shapes from the outside shape.

• divide the area of the outside shape by the inside shape.

What is the radius of the circle in this figure?

• 8 ft

• 4 ft

• 16 ft

• 64 ft

What is the area of this composite shape? (Use 3.14 = π and round to the nearest tenths place)

• 21

• 19.2

• 40.2

• 42

Find the area of the composite figure. Round your answer to the nearest tenth.

• 32.4 mm²

• 36.4 mm²

• 39.4 mm²

• 42.4 mm²

Find the area of the composite figure. Round your answer to the nearest tenth.

• 122.1 m²

• 128.1 m²

• 134.1 m²

• 138.1 m²

What is the perimeter of this semi circle? (Use 3.14 = π and round to the nearest tenths place)

• 18.5

• 11.3

• 20.3

• 22.6

Find the area of the hexagon

• 300√3

• 519.62

• 600√3

• 100√2

What does the 'a' stand for in the following formula?

• area 

• apossum

• altitude

• apothem

Find the composite area.

• 6.28

• 24

• 40

• 38.28