MULTIPLY BOTH SIDES OF THE EQUATION BY 3, TAKE THE SQUARE ROOT OF BOTH SIDES OF THE EQUATION, AND DIVIDE BOTH SIDES OF THE EQUATION BY πh . answer for PLATO
The answer is A, 75 degrees add all like terms 2x+196 all triangles equal 180 degrees 2x+196=180 subtract the 196 from 180 2x= -16 divide x= -8 plug into angle A -8+83 A=75