Question

Find the surface area.

Answer 1

The area of the two bases is 2*(1/2)*(3 in)*(4 in) = 12 in².

The lateral area is that of a rectangle 2 in high by (3 in + 4 in + 5 in) long, so is
   (2 in)×(12 in) = 24 in²

The total surface area is the sum of the base areas and the lateral area
   A = 12 in² + 24 in²
   A = 36 in²

_____
Because you're familiar with the Pythagorean theorem, you know the right triangle with side lengths 3 and 4 will have a hypotenuse of length 5.

Answer 2

Answer:

Step-by-step explanation:

The area of the two bases is 2*(1/2)*(3 in)*(4 in) = 12 in².

The lateral area is that of a rectangle 2 in high by (3 in + 4 in + 5 in) long, so is

  (2 in)×(12 in) = 24 in²

The total surface area is the sum of the base areas and the lateral area

  A = 12 in² + 24 in²

  A = 36 in²

_____

Because you're familiar with the Pythagorean theorem, you know the right triangle with side lengths 3 and 4 will have a hypotenuse of length