The formula to find the volume of a sphere is:
V = (4/3)πr^3
Substituting r = 3, we get:
V = (4/3)π(3^3) V = 113.1 cubic inches
To find the time it takes Sarah to inflate the balloon, we can use the formula:
time = volume / rate of inflation
Substituting the values we know, we get:
time = 113.1 / 200 time = 0.5655 minutes
Rounding to the nearest tenth, the time it takes Sarah to inflate the balloon is approximately 0.6 minutes.