Question

any one please tell plz plzplz​

Answer 1

LET ratio = x

than heigth = 4x

and base = 5x

area of triangle 1/2 × base × height

$90 = 4x \times 5x \times \frac{1}{2} \\ 180 = 20x^2 \\ x ^2= 9$

x=3

base = 5 × 3

base = 15

height = 4× 3

height = 12