Apr 19: Lesson 5 Review Circles.

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

• 20ft

• 5ft

• 31.4ft

• 62.8ft

what is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

What is the distance around a circle?

• Circumference

• Area

• Diameter

• Radius

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

A circle has a diameter of 17 inches. What is the circumference?

• 106.76 inches

• 53.38 inches

• 907.46 inches

• 34 inches

What is the circumference?

• 50.24

• 96

• 24

• 18

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

A circle has only one radius.

• True

• False

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