The length of the block = 1ft.
The volume of the length of the side of blocks = 1ft^3
The 3 on the one feet means raised to power 3.
So, 1ft raised to power 3:

To get the length, we would assume the block is a cube
The volume of a cube = length^3
1 ft^3 = length^3
![\begin{gathered} \text{cube root both sides:} \\ \sqrt[3]{1ft^3}\text{ = }\sqrt[3]{length^3} \\ \text{length = }\sqrt[3]{(1\text{ft}}*1ft*1ft) \\ \text{length = 1ft} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/x645uqeqvcbipm5gplyjukzux08p4hl0ts.png)
Hence, the length of the block = 1ft.