Area Circumference Arclength

• None of the above

In a​ circle, a 90° sector has area 201.06 in². What is the area of the​ circle?

• 804 in²

• 3217 in²

• 5027 in²

• 51,472 in²

what is the circumference of this circle ?

(in terms of pi)

Mathematical Equivalence

ON

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

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

What is the distance around a circle?

• Circumference

• Area

• Diameter

• Radius

Find the circumference of a circle with a diameter of 11 millimeters.

(in terms of pi)

Mathematical Equivalence

ON

Find the arc length.  Leave your answer in terms of π.

Mathematical Equivalence

OFF

Find the arc length of the bolded arc in the picture.

(write in terms of pi)

Mathematical Equivalence

ON

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

(in terms of pi)

Mathematical Equivalence

ON

What is the circumference of a circle whose radius is 4 inches?

• C = 4 inches