+128474 Basically...if I read this correctly....we want the surface area of the "front" of this object
The area of the top triangle is (1/2) base of triangle * height of triangle = (1/2) (6)(7) = 21 m^2
And the area of the rectangle below this = base * height = 6 * 2 = 12 mm^2
So...the area specified is [ 21 + 12 ] = 33 mm^2
