<PRE><B>Question 1030590</B>
Hi there,
Make the base = x
Height = x + 3
Area of a triangle
= 1/2( base x height)
77 = 1/2(x(x + 3))
77 = 1/2(x^2 + 3x)
Multiply both sides by 2
154 = x^2 + 3x
Put in ax^2 + bx + c = 0 form
x^2 + 3x - 154 = 0
Factorize
(x + 14)(x - 11) = 0
x + 14 = 0
x = -14 disregard as -ve)
x - 11 = 0
x = 11
Base = 11 cm
Height = 14 cm
Hope this helps :-)</PRE>