Area and Circumference of Circles

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Tags

CCSS.7.G.B.4

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

What is the formula for finding the circumstance for a circle with just the radius?

•  2*π*r
• 1/2 b*h
• a+b/2*h
• I do not know

Tags

CCSS.7.G.B.4

What is the formula for finding the circumstance of a circle with just the diameter?

•  π*d
• b*h
• l*w*h
• I do not know

Tags

CCSS.7.G.B.4

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Tags

CCSS.7.G.B.4

What is the formula for area of a circle given the radius?

• A = πr
• A = 2πr
• A = πd
• A = πr²

Tags

CCSS.7.G.B.4

What is the area of a circle with a radius of 21 cm?

• 1384.74 cm²
• 2142.12 cm²
• 4348.08 cm²
• 1289.12 cm²

Tags

CCSS.7.G.B.4

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2
• 9.42 cm2
• unicorns are awsome
• 45.3 cm2

Tags

CCSS.7.G.B.4