14. What is the surface area of this figure in square centimeters?

D

Step-by-step explanation:

Front and back (triangles

There are two triangles (right angle).

They are found by multiplying the 2 legs together.

Area = 1/2 * b * h

b = 4

h = 3

Area = 1/2 * 4 * 3

Area = 6

But there are 2 of them so the Area =                          12

Left face (slanted.

The hypotenuse of the right triangle is 5

a^2 + b^2 = c^2

a = 3

b = 4

c = ?

3^2 + 4^2 = c^2

9 + 16 = c^2

c^2 = 25

sqrt(c^2) = sqrt(25)

c = 5

The front face is 5* 7 =                                 35

Left side

w = 3

L = 7

Area 3 * 7 =                                                   21

Bottom

L = 7

w = 4

Area = L * W

Area = 7 * 4                                                  28

Total                                                              96

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