The surface area of a rectangular prism is given by the formula:
Surface Area = 2lw + 2lh + 2wh
In this case, we are given that the height (h) and width (w) are both 9 cm. The surface area is also given as 432 cm squared. Plugging in these values:
432 = 2(9)(l) + 2(9)(9) + 2(9)(l)
432 = 18l + 162 + 18l
432 = 36l + 162
270 = 36l
l = 7.5
Therefore, the missing length of the rectangular prism is 7.5 cm.
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 squared?
__ cm
1 answer