3m because in a square all sides are the same and there are 4 sides, so 12 ÷ 4 = 3
Hopefully this helps you !
I believe the answer is vertical stretch
<span>A=1/2(a+b)h for h.
First, you need to get rid of 1/2, so divide both sides by 1/2.
A/(1/2) = (a + b)h
You can simplify the </span>A/(1/2) by multiplying by the reciprocal of 1/2, so 2/1.
2A = (a + b)h
Now divide both sides by (a+b).
2A/(a+b) = h
350 is the solution because the slope is 50meters/1minute
50✖️7=350
Or 250+50+50=350