Understanding the Area of Circles

What does the area of a shape represent?

• The volume of the shape

• The space inside the shape

• The length of the shape

• The perimeter of the shape

What shape is formed when aligning the sectors of a circle in a straight line?

• Circle

• Parallelogram

• Triangle

• Rectangle

What is the formula for the area of a circle?

• Area = radius * radius / 2

• Area = 2 * pi * radius

• Area = pi * radius squared

• Area = pi * diameter

Tags

CCSS.7.G.B.4

What does pi approximately equal to?

• 3.14

• 2.18

• 3.5

• 2.22

Tags

CCSS.HSG.GMD.A.1

What is the shape of the sectors when cut from a circle?

• Circle

• Triangle

• Square

• Rectangle

What is the relationship between the circle's radius and the parallelogram's height in the area formula derivation?

• The height is twice the radius

• The radius is half the height

• They are equal

• There is no relationship

Tags

CCSS.6.G.A.1

How do you represent the area of a circle in terms of pi and radius?

• Pi times diameter

• Pi divided by radius

• Pi plus radius

• Pi times radius squared

Tags

CCSS.7.G.B.4

How do you calculate the radius if you are given the diameter of the circle?

• Divide the diameter by pi

• Multiply the diameter by pi

• Divide the diameter by 2

• Multiply the diameter by 2

Tags

CCSS.7.G.B.4

What is the first step in solving a circle's area problem?

• Write the formula

• Find the diameter

• Find the radius

• Multiply by pi

Tags

CCSS.7.G.B.4

What should you always remember to do with your final answer when calculating area?

• Square the units

• Add pi

• Multiply by the radius

• Divide by 2

Tags

CCSS.7.G.B.4