What is the diameter of sphere with radius \(1 km\)?

\(3 km\)

\(4 km\)

\(0.5 km\)

\(2 km\)

\(1 km\)

2.

EASY

A ball has a radius of \(3 cm\). What is the circumference of the ball?

16.77

19.28

15.63

18.85

18.55

3.

EASY

What is the diameter of this circle?

1

2

3

6

9

4.

EASY

What is the area of a circle with circumference \(56 m\)?

\(250 cm^2\)

\(250 m^2\)

\(260 cm^2\)

\(240 cm^2\)

\(255 m^2\)

5.

MEDIUM

Andy is lost and rides his bike around in circles. He travels at \(3m/s\) and it takes him 2 minutes to go around the circle. What is the radius of the circle?

\(55.6 m\)

\(64.1 m\)

\(84.5 m\)

\(36.3 m\)

\(57.3 m\)

6.

HARD

On average, there are 3 pepperonis every \(10 cm^{2}\) of pizza. The side of a pizza slice is \(12 cm\) long. How many pepperonis are on the pizza?