Area of Circles

What is the radius of this circle?

• 12

• 6

• 24

• 144

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2

• 15.3

• 124.2

• 113.04

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 1384.74

• 2142.12

• 5541.77

• 1289.12

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 82.13

• 78.5

• 314.16

• 170.12

Tags

CCSS.7.G.B.4

A line from the center point to the edge of the circle

• diameter

• radio

• radius

• circumference

A line that goes from one edge of the circle to another and crosses the center point

• center

• diameter

• circumference

• radius

What is the area of a circle with a diameter of 10 cm ? (use 3.14 for  $\pi$  ). 

• 31.4 cm²

• 78.5 cm²

• 15.7 cm²

• 314 cm²

Tags

CCSS.7.G.B.4

What is the formula for area of a circle given the radius?

• A = πr
• A = 2πr
• A = πd
• A = πr²

Tags

CCSS.7.G.B.4

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2

• Subtract 2 from the diameter

• Add 2 to the diameter

• Divide the diameter by 2

Tags

CCSS.7.G.B.4

Kiana is measuring how much stone to put around her circular swimming pool. Which measurement does she need?

• area

• circumference