Question

The surface area of the rectangular prism is
598cm² Solve for x

Answer 1

x = 10 cm

Explanation:

The total surface area of rectangular prism =
`2 (lb + bh + lh)`

Given,

l = x cm

b = 11 cm

h = 9 cm

TSA = 598 cm

Plugging in the values we get,

`598 = 2(11x + 99 + 9x)\\20x = 299-99\\x = 10`