Question

ABCD is a parellelogram B-114°, ACD=36° LPAB=(2y+10)
and ACB = 36°.Find x and y​

Answer 1

Answer:

Let ABCD is a ∥gm in which AB=CD=2x, then AP=PB=x, because P is mid point. Draw DE⊥AB=h

or  APCD=36cm2⇒21(x+2x)h=36⟶(1)

ar △ABC=21h×2x=hx⟶(2)

21×3x×h=36⇒hx=24(from eq(1))

Hence, ar △ABC=hx=24cm2