Question

the area of triangle is 90 cm square if the base is 15 cm find the altitude

Answer 1

area of a triangle =1/2xbasexheight
90=1/2x15xa
a/2=6a=12cm

Answer 2

area of Δ=1/2 ×b×h=90cm²
                1/2×15×h=90
   ∴ h=90×2/15
        =12cm
altitude,h=12cm