c. 35 sq. units
how you get that is you multiply
5 x 14 = 70
then divide by 2
70 divided by 2 = 35
formula
base x height divided by 2 = area of triangle (remember to square it also)
Answer:
A
Step-by-step explanation:
Area of a triangle = 
where b = base length and h = height
the triangle shown has a base length of 2 and 1/2 and a height 4. and 2/5
So area =

5.5 also = 
Hence, the correct answer is A