Question

How do I find surface area of a prism?

Answer 1

Answer:

Step-by-step explanation:

If you want the surface area of a rectangular prism, then you'll use a formula resembling this:

A = 2(area of end) + 2(area of top) + 2 (area of side).

Example:  suppose the dimensions of the prism are 3 in by 5 in by 8 in.

Then the total surface area is:

A = 2(3*5) + 2(3*8) + 2(5*8) square inches, or 2(15) + 2(48) + 2(40) sq in, or

A = 30 + 96 + 80 sq in, or A = 206 sq in

Answer 2

[ Explanation ]

$\boxed{Surface \ Area \ = 2(wl \ + hl \ + hw)}$

[ Explanation ]

W - Width

L - Length

H - Height

Area = 2 Multiplied By...Width * Length + Height * Length + Height * Width

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Example Problem:

Rectangle:

Width - 6

Height - 2

Length 3

Plug Numbers Into Equation:

2(6 * 3 + 2 * 3 + 6 * 2)

Solve

6 * 3 = 18

2 * 3 = 6

6 * 2 = 12

Add

18 + 6 + 12 = 32

Multiply

36 * 2 = 72

Surface Area = 72 $Units^{2}$

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