Finding Diameter and Radius Given Area of a Circle

A line that goes from the center to outwards is called...

• Diameter

• Circumference

• Radius

• Say what???

• Diameter

• Radius

• Circumference

• :)

Tags

CCSS.7.G.B.4

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

• Multiply the diameter by 2

• Divide the diameter by 2

• Add 2 to the diameter

• Subtract 2 from the diameter

Tags

CCSS.7.G.B.4

The radius is....

• a line that crosses through the center and touches each edge 

• the center point of a circle 

• a line from the center point to the edge of the circle

• an element in science

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 44'

• 22'

• 11'

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Tags

CCSS.7.G.B.4

The _____ is the distance from the center to any point on the circle.

• diameter

• radius

• π

• center

The distance across a circle through its center is called the _____.

• diameter

• radius

• π

• center