Are these proportional? There are two.

Distance formula:

where d - distance, t - time, s - speed

Let the distance be constant, d = k, then the speed is:

Since the distance is constant, the speed is inversely proportional with time

Let the speed be constant, s = k, then the distance is:

The distance is directly proportional with time

Distance formula:

-d=ts.

where d-distance, time-t, speed-s.

Let the distance be constant, d=k,then the speed is:

-s=k/t.

the diameter is 16 cm. are you a teacher?

step-by-step explanation: