Question

Find the surface area of this triangular prisim.And pls expliane how you got that answer aswell pls.:)​

Answer 1

Answer:

$756^{2}$

Step-by-step explanation:

To get the area of the triangle sides, we use the formula $\frac{bh}{2}$

In words, this is base · height ÷ 2

After using this formula we find the surface area of the triangle sides is 54

Of course because there are two sides, we do 54 + 54 = 108

For the base of the prism, we do 12 · 18, which equals 216

For the back, we do 9 · 18, which equals 162

For the top, we do 15 · 18, which equals 270

Now that we have the individual areas of all the faces, we add them together. Doing this, we get $756^{2}$