Question

A triangle has an area of 20 cm2. If its base is 40% of its height, what is its height to the nearest tenth of a centimeter?

Answer 1

i hope this


height =h



base=h40%=2h/5




area=height ×base/2



20=h.2h/5/2



h^2=20.10


h^2=2.10.10


h=10 square root of 2