Area Circles and Composite Figures

Braylon needs to purchase new glass for the window pictured below.  About how many square feet of glass will he need to purchase?(the lengths are for the entire side, not just one window pane.) Use 3 for pi. 

• about 19.2ft ²

• about 23ft²

• about 21.5ft²

• about 6ft²

A local restaurant places tissue-paper liners in baskets for yeast rolls like the liner pictured below.  About how many square centimeters of tissue paper are needed to make one liner?

• 200.96 cm²

• 379.2 cm²

• 251.2 cm²   

• 253.6 cm²

Determine the area of the composite figure.

• 52.8m²

• 53.8m²

• 50.8m²

• 51.8m²

Determine the area of the shaded region. 

• 42.24 m²

• 26.42 m²

• 40.42 m²

• 41.42 m²

The floor plan of Katrisa's bedroom is shown below.  If Katrisa wants to carpet her bedroom, about how much carpet should she purchase?

• 778.5 square feet

• 887.8 square feet

• 798.4 square feet 

• 787.7 square feet

A carpenter planned to change a round tabletop into a square tabletop.  He wanted to attach the square piece to the original round tabletop as shown below.  How could he determine the area of the square piece?

• Square the diameter of the circle.

• Square the radius of the circle.

• Square the radius of the circle and multiply by pi.

• Multiply the diameter of the circle by 4.

The figure shows 2 circles inside a trapezoid.  Which procedure should be used to find the area of the shaded region?

• Subtract the perimeter of the trapezoid from the area of both circles.

• Subtract the circumference of both circles from the area of the trapezoid.

• Subtract the area of the trapezoid from the area of both circles.

• Subtract the area of both circles from the area of the trapezoid.

Which of the following equations could NOT be used to find the area of the composite figure shown?

• 1/2(4)(9)+9(9)

• 9(9)+.5(9)(4)

• .5(4)(9)+13(9)

• 13(9) - 4(2)

What is the area of the composite figure? (use 3.14 for pi)

• 14 cm²

• 6.28 cm²

• 12.56 cm²

• 20.28 cm²

What is the radius of a circle with diameter 24 cm?

• 24 cm

• 48 cm

• 12 cm 

• 72 cm