Compound Figures with Circles

Jeff drew a circle inside a square, as shown below.  Which method can Jeff use to find the area of the square not covered by the circle?

• Subtract the area of the circle from the area of the square.

• Subtract the area of the square from the area of the circle.

• Subtract 1/4 the area of the square from the area of the circle.

• Subtract 1/4 the area of the circle from the area of the square.

Tags

CCSS.3.MD.C.7D

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

What is the circumference?

• 48

• 96

• 24

• 18

Tags

CCSS.7.G.B.4

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

The radius of the larger circle is 5 meters and the radius of the smaller circle is 2.5 meters. What is the approximate area of the shaded region?

• 5 squared meters

• 20 squared meters

• 59 squared meters

• 79 squared meters

Tags

CCSS.7.G.B.4

For the school fair, Helen paints a large bullseye for the beanbag toss. The radius of the innermost circle is 6 inches. The diameter of the middle circle is 2 feet. The diameter of the largest circle is 6 feet. Helen paints the shaded region of the bullseye. How many square feet does Helen paint? Use π≈3.14

Tags

CCSS.7.G.B.4

What is the area of the figure to the nearest square centimeter (whole number)?

Mathematical Equivalence

ON

Solve.

• 78.5 cm²

• 100 cm²

• 21.5 cm²

• 121.5 cm²

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4