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**Table of Content**

Volume of a rectangle calculator is usauly to find the unknown sides and volume of a rectangular box, tank, or prism.

Volume is the amount of liquid that a box, rectangle, or tank can hold. For instance, if you have a fish tank, the volume of that tank will be the amount of water it can hold. Cubic inches and centimeters are used to represent the volume.

Use the below-mentioned formulas to calculate the volume of the rectangle and its unknown sides:

**Rectangle Volume Formula =V = L Ã— W Ã— H**

Where

**V**represents the volume**L**is the length of the rectangle**W**is the width of the rectangle**H**is the representative of the rectangular height

**S = 2(lw + lh + wh)**

**d = sqrt(l^2 + w^2 + h^2)**

If it seems difficult, then use an online volume of a rectangle calculator to find the precise volume of rectangle. It will just require a few inputs and will do the rest calculations for you.

Follow the below-mentioned steps to calculate the unknown sides and volume of the rectangle:

- If you have the length, width, and height and have to find the volume, surface area, and diagonal of a rectangular prism, then use the following formulas:
- V = lwh
- S = 2(lw + lh + wh)
- d = sqrt(l2 + w2 + h2)

- If you have area, width, and length and have to calculate the height, volume, and diagonal of a rectangle, then follow the below-mentioned formulas:
- h = (S – 2lw) / (2l + 2w)
- V = lwh
- d = sqrt(l^2 + w^2 + h^2)

- Given the length, rectangle volume, and width to find the height, surface area, and diagonal of a rectangular prism then the formulas will be:
- h = V / lw
- S = 2(lw + lh + wh)
- d = sqrt(l^2 + w^2 + h^2)

- If you have the diagonal, length, and width and have to get the height, volume, and surface area of a rectangular prism, then use the following formulas:
- h = sqrt(d^2 – l^2 – w^2)
- V = lwh
- S = 2(lw + lh + wh)

Instead of keeping all of these formulas remember, you can get the help of a volume of a rectangle calculator. It will let you perform the precise calculator of volume effortlessly.

Suppose you have a rectangular swimming pool that is 12 feet wide, 25 feet long and the height of the pool is 4 feet then how do you find the volume of a rectangle?

Given that:

- Length = L = 25 ft
- Width = W = 12 ft
- Height = H = 4 ft

Now put these values into the volume of a rectangle formula:

V = L x W X H = 25 x 12 x 4 = 1200 ft^3

V = 1200 ft^3