Answer:
4cm
Step-by-step explanation:
The formula for area of a triangle is hxb/2 so plug in the the area so the equation looks like hx5/2=10 and you get 4 for height
Answer is B. 2.19/Ib (just divide 4 by 8.76)
The answer is 5.35, 275, 336, and 535
so, x =

and y =

Hence, the answer is the first one.