Plz plz plz help I'm confused

Question

Two right triangles are similar. The base of the larger triangle is 4 times the size of the base of the smaller triangle. The height of the larger triangle is 16cm. The area of the smaller triangle is 6cm². A) what is the area of the larger triangle? B) what is the length of the hypotenuse of each triangle?

Plz someone explain how to solve this I'm so confused.

Answer 1

c, ab/2=6sq/cm, a=3, b=4, a^2+b^2=c^2, c=5cm

4c, h=16, h2c=area, c now=20, ch/2=320/2=160sq/cm

"c"=hypotenuse