Find the height of the figure below if the triangle is an equilateral triangle and the surface area is 51.678 mm^2

SA=bh

The base is an equilateral triangle that means that the base=2.7^3=19.683

51.678=19.683h

divide both sides by the base

2.626mm=h

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm