25% de 200 = 50
30% de 480 = 144
65% de 80 = 52
24% de 30 = 7.2
Answer:
let height of ||g be 'b', then base of ||g be 3b.
area of ||g=base×height
75cm
2
=3b×b
b
=25
b=5cm, therefore height =5cm