The square root of -48 is 2 because 2x2x2x2x2x2x is not -48
The perimeter of the equilateral triangle will be 76.2 in
<u>Explanation:</u>
Altitude of an equilateral triangle, H = 22 in
Perimeter, p = ?
Let a be the side of the triangle
We know:

Perimeter = 3a
P = 3 X 25.4 in
P = 76.2 in
Well, volume is: length x width x height
so, 5 x 14 x 8= 560 inches