Question

• Can you plz make video on theorms of class 9th
  

If a b c and B D E are the two equilateral triangle such that D is the midpoint of the BC then prove that area of triangle BD equal to one by fourth of the area of triangle ABC

mistake in 1st answere in

• What is gst
  

Find area of a quadrilateral whose diagonal is of length 70 m. And length of perpendicular drawn from opposite vertices on the diagonal area of length 36 m. And 22m respectively