Use the net to determine the total surface area.A. 84cm 2B 132cm 2C 48cm 2D 120cm 2{THIS IS WORTH 40 POINTS BY THE WAY} please help if you can.

for the square, 6 x 6 = 36^2cm and for each triangle you have to use the equation base x height divided by 2 so each triangle is equal to 12^2cm. 12 x 4 = 48 + 36 is a total of 84^2cm or A