Finding Area and Perimeter of Circles, Triangles, Rectangles

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.

To calculate the amount of carpeting needed for your bedroom, which of the following should you find: 

• Area

• Perimeter

• Surface Area

• Volume

Find the circumference of the circle.

Use π = 3.14.

• 87.82in

• 153.86in

• 43.96in

• 307.72in

Find the area of the circle.

Use π = 3.14.

• 87.82in

• 153.86in

• 43.96in

• 307.72in

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

Find the circumference of the circle.

• 38.47 cm

• 10.99 cm

• 43.96 cm

• 21.98 cm

The Carillo family has a circular swimming pool with a diameter of 10 feet. Find the area of the pool cover to the nearest tenth.

• 94 ft²

• 53.4 ft²

• 70.9 ft²

• 78.5 ft²

The formula for finding the area of a circle is...

What is the diameter of this circle?

• 8cm

• 16cm

• 10cm

• 4cm

What is the radius of this circle?

• 18in

• 36in

• 9in

• 6in