Area of Shaded Region in a Circle Inscribed in a Square

A circle is inscribed in a square. Determine the area of the SHADED region. Use 3.14 as pi.

• 225 m²

• 193.5 m²

• 706.5 m²

• 94.20 m²

A circular railroad-crossing sign has a diameter of 30 inches. Which measurement is closest to the area of the sign in square inches?

• 94.2 in.²

• 188.4 in.²

• 706.5 in.²

• 286.6 in.²

A sundial has a circular base with a diameter of 90 feet. Which measurement is the closest to the area of the circular base of the sundial in square feet?

• 3,627.5 ft²

• 282.6 ft²

• 141.3 ft²

• 6,358.5 ft²

A circle has a radius of 4.5 centimeters. Which measurement is closest to the circumference of the circle in centimeters?

• 14.13 cm

• 28.26 cm

• 63.59 cm

• 56.52 cm

A sidewalk in the shape of two triangles, a rectangle, and a square was built around the edge of a building as shown. What is the area of the sidewalk in square feet?

• 108 ft²

• 162 ft²

• 144 ft²

• 180 ft²

The circumference of a circle is C inches. The diameter of the circle is 19 inches. Which expression best represents the value of π?

• C/19

• 19/C

• C/9.5

• 9.5/C