Question

What is the value of H?

Answer 1

The formula of an area of a tringle:

`A_\Delta=(base\cdot height)/(2)`

We have:

`b_1=20\ ft,\ h_1=12\ ft`

and

`b_2=30\ ft,\ h_2=h`

The area does not change. Therefore we have the equation:

`((30)(h))/(2)=((20)(12))/(2)\\\\15h=(10)(12)\\\\15h=120\qquad|:15\\\\\boxed{h=8\ ft}`