What’s is a missing length of rectangular prism where the Height and width are both 9 cm and the surface area is 432 cm2

To find the missing length of the rectangular prism, we first need to calculate the surface area of the prism using the formula:

Surface Area = 2lw + 2lh + 2wh

Given that the width (w) and height (h) are both 9 cm and the surface area is 432 cm2, we can plug in these values and solve for the missing length (l):

432 = 2(9)(9) + 2(l)(9) + 2(9)(l)
432 = 162 + 18l + 18l
432 = 162 + 36l
270 = 36l
l = 7.5 cm

Therefore, the missing length of the rectangular prism is 7.5 cm.