Find Radius or Diameter when given Area

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

• Radius
• Diameter

Tags

CCSS.4.G.A.1

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

• Radius
• Diameter

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

How do you find the area of a circle?

• $\pi d^2$

• $2\pi^2$

• $2\pi r$

• $\pi r^2$

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

A circular pie has an area of 706.5 cm². What is the RADIUS of the pie? Round to nearest whole number. Don't forget to label.

A circular table top has an area of 324 square inches. What is the measurement of the RADIUS of the table top in inches? Round to the nearest hundredth. Don't forget to label.

The area of a circle is 12.56 yd². What is the circle's DIAMETER? Round to the nearest whole number.

What is the DIAMETER of a circle if its area is 360 in² . Round to the nearest hundredth. Don't forget to label.

What is the diameter of a circle with a radius of 5.5 cm?

• 5.5 cm
• 2.25 cm
• 11 cm
• A:LKFJ:LSKFJ

Tags

CCSS.7.G.B.4

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

• 40ft
• 80ft
• 20ft
• 45ft

Tags

CCSS.7.G.B.4

find the area of the circle below.

• 100 cm
• 225 cm
• 9 cm
• 28.26 cm