I am not sure how to get the volume and how to round it to the nearest hundredth

Answer: 261m
Step-by-step explanation:
Volume of a cone (V) is calculated as:
V=πr^2h/3
where pi is a constant, given as 3.14, r = radius 5m, and h= height of 10m.
r^2= 5x5= 25; h/3 = 10/3 = 3.33
Slot the values into the formula:
Volume= 3.14 x 25 x 3.33
Volume= 261.405m
To the nearest 100 = 261m
I hope this helps.