Question

Please help
I need the lateral surface area

Answer 1

`la = 588 \: \: {cm}^(2)`

Explanation:

Lateral area for trapezoidal prism:

- Is the sum of all the areas excluding the base area.

la - Lateral area

`a = 20\\ b = 10 \\ c = 10 \\ d = 9 \\ l = 12`

`la = al + \: bl + \: cl + \: dl`

`la = l(a + \: b + \: c + \: d)`

`la = 12(20 + 10 + 10 + 9)`

`la = 588 \: \: {cm}^(2)`