Find the Radius given Area or Circumference

Find the radius of a circle who's diameter is 40 ft.

• 40ft
• 80ft
• 20ft
• 45ft

Tags

CCSS.7.G.B.4

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

Tags

CCSS.HSG.GMD.A.1

What is the formula for the area of a circle?

• A = π

• A = 2πr

• A = πr²

• A = πd

Tags

CCSS.7.G.B.4

find the area of the circle below.

• 100 cm
• 225 cm
• 9 cm
• 28.26 cm

Tags

CCSS.7.G.B.4

• 8 cm

• 4 cm

• 7.74 cm

• 64 cm

Tags

CCSS.7.G.B.4

• 60 cm

• 900 cm

• 450 cm

• 30 cm

Tags

CCSS.7.G.B.4

Tags

CCSS.7.G.B.4

Tags

CCSS.7.G.B.4

Tags

CCSS.7.G.B.4

If a circle has a circumference of 72.22 in, what is the diameter?

Tags

CCSS.7.G.B.4