Area and Circumference of Circles

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

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

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

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm
• 18.84mm
• 78.5mm
• none of the above

Tags

CCSS.7.G.B.4

What is the formula for finding the circumference for a circle given the radius?

• 2*π*r

• 1/2 b*h

• a+b/2*h

• I do not know

What is the area of this circle?

• 1385.44
• 2142.12
• 5541.77
• 1289.12

Tags

CCSS.7.G.B.4

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

• Diameter
• Radius

Find the area of the circle

• 56.52
• 254.34
• 1017.36
• 113.04

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 6082.12
• 1519.76
• 1893.14
• 1292.92

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 82.13
• 78.5
• 314.16
• 170.12

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a radius of 13.5 mm.

• 37.68mm
• 18.84mm
• 84.78 mm
• none of the above

Tags

CCSS.7.G.B.4