A=1/2h(a+b)
1/2 can be said as 0.5
so
A=0.5h(a+b)
0.5h is being multiplied with (a+b), taking this expression of left hand side gives
A/0.5(a+b)=h
OR
h=A/0.5(a+b)
This is the final answer
Hi I would have to say B sorry if this answer is sucky but I'm trying my best to help you :D
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Answer: A or B
Explanation: I think it's A or B Because they are the ones that make more sence