. What is missing length of rectangular prism if height and width are both 8 inches. And surface area is 256 in^2

1 answer

To find the missing length of the rectangular prism, we first need to calculate the total surface area which is given by the formula:

Surface area = 2lw + 2lh + 2wh

Given:
Height = 8 inches
Width = 8 inches
Surface area = 256 in^2

Plugging in the values:

256 = 2(8)(8) + 2(8)(8) + 2(8)h
256 = 128 + 128 + 16h
256 = 256 + 16h
16h = 0
h = 0

Since the height cannot be zero, there seems to be an error in the given information.