Answer:
165unit^2
Step-by-step explanation:
If W = 5 units, X = 10 units, Y = 9 units, and Z = 7 units
We group for triangles =
X * Z/2 = Triangle 1 as shown on 2nd step.
W * Y/2 = Triangle 2 as shown on 3rd step.
We have 4 triangles that come off the base and meet at a point.
Step 1
Solve for base W x X = length x width = 10 x 5 = 50unit^2
Step 2
Triangle 1 = b x h / 2 (length of base x h /2) = (10 x 7)/2 = 35unit^2
Congruent for back triangle also is 35unit^2
Step 3
Triangle 2 = b x h / 2 (length of base x h /2 ) = (5 x 9)/2 = 22.5unit^2
Congruent for side triangle left so right also is 22.5 unit^2
Step 4
is add them together
50+35+35+22.5+22.5 = 165unit^2
