Area and Circumference of Circles

Ms. Catall is using a compass to find her way out of the woods. The compass has a radius of 4 centimeters. What is the compass's area?

• 49.2 cm²

• 45.6 cm²

• 50.24 cm²

• 55.9 cm²

A line that goes from one end of the circle to the other and crosses the center point.  

• center
• diameter
• dime eater
• radius

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

What is the radius of this circle?

• 18 in
• 10 in
• 9 in
• 8 in

What is the diameter of this circle?

• 3.5 m
• 3 m
• 5 m
• 7 m

Tags

CCSS.7.G.B.4

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

Tags

CCSS.7.G.B.4

Find the area of the circle

• 56.52 in²
• 254.34 in²
• 1017.36 in²
• 113.04 in²

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?

• 11.32 ft
• 12.25 ft
• 10.99 ft
• 8.75 ft

Tags

CCSS.7.G.B.4

Find the circumference (to the nearest whole number)

• 88 in
• 44 in
• 116 square in
• None of the above

Tags

CCSS.7.G.B.4