Question

expalin the answer fast

Answer 1

Area Of Parallelogram==Base×Height
Given Base is Twice it's Altitude (Height)
So,
Let Altitude=X
Then Base=2x

Area Is Given =288cm²
We know Area=Base×Height
Means
Base×Height=288
2x×x=288
2x²=288
x²=288/2
x²=144

Now Some One Square Is 144 You Can do it with two Methods
First
x²=144
X=√144
X=12

Second
Prime Factorize it and make pair
144=(2×2×2×2×3×3)
2×2×3
=12

So In any manner you got
Altitude=12 cm