So for the triangle you would use the formula A=1/2 bh (b represents the measurement of the base, h represents the height) A= 1/2 30(40) A= 1/2 1200 A=600 Now for the rectangle you use the formula A= l x w (l represents length, w means width) A= 100 x 40 A= 4000 Now you just add the two answers together A= 4000 + 600= 4600
