Answer:
V=4618.14m^3 (round to 2 dp)
Explanation:
the diameter is 28m so the radius will be half of it hence 14m
the height is 7 1/2m which is 7.5m
the formula to find the volume of a cylinder is

so
*(14^2)(7.5)
this equals to 4618.14m^3 (round to 2 dp)