Area of Circles Given Radius or Diameter

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

What is the circumference?

• 36

• 18π

• 108π

• 36π

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

What is the area of this circle?

• 452.39

• 139.12

• 113.1

• 84.23

Tags

CCSS.7.G.B.4

What is the radius measurement? ​ (a)  

• 6 cm

• 12 cm 

• 24 cm

Tags

CCSS.7.G.B.4

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 140

• 35

• 70

• 490

Tags

CCSS.7.G.B.4

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

What is the formula for finding the area of a circle?

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d

Tags

CCSS.7.G.B.4