2 x (11 x 3) + 2 x (11 x 3) + 2 x (3 x 3) = 150 square feet
Volume: 3*15*2 = 90 cubic ft
You cannot define a volume with only two linear dimensions.
Assuming your pond is a perfect rectangular prism, with the measurements you indicated, its volume is 63 cubic feet. There are, approximately, 7.5 gallons in a cubic foot. So, the volume of your pool, in gallons is about 472. Again, that's assuming your pond is a perfect rectangular prism. Most ponds I've seen are not. First, the surface is not rectangular, but curved. Second, the bottom is not level, with the depth ranging from zero at the edges to a maximum depth somewhere in the middle. If the measurements you gave are just the maximum length, width, and depth, then the volume of your pond is quite a bit smaller. 464.94 (7x3x3x7.58) This is the formula that I was told to use
2ft x 3ft x 5ft = 30 cubic feet.
2in. tall x 3ft. wide
You need three dimensions. The depth, the width, and the length. Otherwise you can't figure out the volume.
Volume = 3ft x 3ft x 9ft = 81 cubic feet.
A cubic yard is: volume defined by a cube that is 3ft x 3ft x 3ft; i.e. 3ft high x 3ft wide x 3ft deep. For example: a box 3x3x3 feet filled with gravel is one cubic yard since a yard=3 feet.
They are 9ft heigh 2ft deep 3ft wide
144 cubic feet.