Question

calculate the area of triangle ADE and compare it with area of triangle ABC. {4,6}

Answer 1

area of a triangle

$\frac{1}{2} \times the \: base \: of \: the \: triangle \times the \: altitude \: of \: the \: triangle$
now solve using this formula
suppose base is four cm and altitude is six cm
the 1/2*4*6 is the area of the triangle which is equal to 12cmsquare