What is the surface area of this solid?

a. 40.82
b. 37.68
c. 28.26
d. 31.4

For this case we have that the surface area of the figure is given by the surface area of a cone plus the surface area of a cylinder.

The surface area of a cylinder is given by:

Where:

h: It's the height

A: It's the radio.

Substituting the values:

On the other hand, the surface area of a cone is given by:

Where:

A: It's the radio

s: inclination

Substituting the values:

S

Thus, the surface area of the figure is:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.