Hey there!
To find volume, multiply the length, width, and height.
For this problem, multiply 10 x 30 x 1/3 . . .
10 = 10/1
30 = 30/1
10 x 30 = 300
1 x 1 = 1
= 300/1
Simplifying 300/1 . . .
300/1 = 300
300 = 300/1
1/3 = 1/3
300 x 1 = 300
1 x 3 = 3
= 300/3
Simplifying 300/3 . . .
300/3 = 100 <-------
The volume is 100 ft.
Hope this helps you.
Have a great day!