Question 800347


the area of a triangle is:

{{{A=(1/2)bh}}} where {{{b=base}}} and {{{h=height}}}

if a base is {{{3cm}}} greater than {{{5}}} times its height {{{h}}}, then {{{b=5h+3}}}

 {{{A=(1/2)bh}}}....substitute {{{b=5h+3}}}

 {{{A=(1/2)(5h+3)h}}}

{{{A=(1/2)(5h^2+3h)}}}