What is the missing length of a rectangular prism where the height and width are both 9 cm and the surface area is 432 cm?? (1 point)
The formula for the surface area of a rectangular prism is:
Surface Area = 2lw + 2lh + 2wh
Given that the height and width are both 9 cm, and the surface area is 432 cm^2, we can plug in the values into the formula:
432 = 2(9)(w) + 2(9)(9) + 2(w)(9)
432 = 18w + 162 + 18w
432 = 36w + 162
270 = 36w
w = 7.5
Therefore, the missing length of the rectangular prism is 7.5 cm.