Answer:
201.5 m squared
Explanation:
There is 2 triangular bases, and the area of a triangle is 1/2 of the base times the height Ex. 1/2 (bxh)
your length is 5 a your width is 4.3 So
5 x 4.3 = 21.5 divided by 1/2 = 10.75 x 2 because their is 2 triangular bases which brings you back to 21.5 m.
now for the slants.
The area of a rectangle is l x w
The length is 12 and your width is 5
12 x 5 = 60 60 x 3 because there is 3 rectangular sides
= 180 m.
add both sums add your surface area is
201.5 m2 squared
I believe this is the answer sorry if it's wrong