Answer:
528m
Explanation:
given the radius 28m, we can find the circumference of the circle using the formula C=2pi×r
substitute the given into the formula we get C=2(22÷7)×28, since pi is equals to 22/7.
C=176m
Now we multiply the result by 3 since it says that it took three rounds, we have 176m×3= 528m
Hope this helps you...