What is the missing length of a rectangular prism where the height and width are both 9 cm in the surface area is 432 cm²
Let the missing length be 'x'.
The surface area of a rectangular prism is given by:
2(lw + lh + wh)
Substituting the given values:
2(x*9 + 9*9 + x*9) = 432
Simplifying:
18x + 162 = 216
18x = 54
x = 3
Therefore, the missing length of the rectangular prism is 3 cm.