Question

Can someone explain how to find the surface area to this composite figure.

Answer 1

Answer:

Surface Area= 498 cm²

Step-by-step explanation:

To calculate the surface area of this composite shape, work out the area of each face and add them together (break this composite figure into two shapes)

- Calculate the areas of the different sized faces

7 x 7 = 49

12 x 7 = 84

12 x 7 = 84

- Now, multiply these areas be number of corresponding faces

49 x 2 = 98

84 x 2 = 168

84 x 2 = 168

- Add these areas together

98 + 168 + 168 = 434

Now do the same for the shape above it

2 x 2 = 4  →  4 x 2 = 8

2 x 7 = 14 → 14 x 2 = 28

7 x 2 = 14 → 14 x 2 = 28  = 64

Add the surface areas together : 434 + 64 = 498 cm²

I HOPE THIS HELPED YOU :)

Answer 2

You find surface area L times width