Circumference and Area of a Circle

The largest cookie ever baked measured a radius of 51 feet.  Which of these is the closest to the area of the cookie?  

• 2601 ft²

• 8167 ft²

• 2042 ft²

• 162 ft²

What is the area of this circle?

• 163.2

• 15.3

• 124.2

• 113.1

Find the Circumference (round to nearest tenth):
diameter = 12 in.

• 37.7 in.

• 37 in.

• 38 in.

• 75.4 in.

Find the Circumference (round to nearest tenth):
diameter = 10 mi

• 31 mi

• 31.4 mi
  31.4 mi

• 31.5 mi
  31.5 mi

• 62.8 mi

Find the Circumference (round to nearest tenth):
diameter = 5 km

• 15.6 km

• 15 km

• 15.7 km

• 31.4 km

Find the Circumference (round to nearest tenth):
radius = 6 cm

• 37.7 cm

• 37.8 cm

• 37 cm

• 18.8 cm

Find the Circumference (round to nearest tenth):
diameter = 4.5 cm

• 14.3 cm

• 14 cm

• 14.1 cm

• 28.3 cm

Find the Circumference (round to nearest tenth):
radius = 15 yd

• 94.5 yd

• 94 yd

• 47.1 yd

• 94.2 yd

Find the Circumference (round to nearest tenth):
diameter = 9 ft

• 28.3 ft

• 28.4 ft

• 28 ft

• 56.5 ft.

A hula hoop has a diameter of 3 feet. What is it's area?

• 18.85 ft²

• 9.42 ft²

• 28.26 ft²

• 7.07 ft²