Answer:
D
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