Answer:
breadth = 10m
Explanation:
lets take the breadth 5x, so height will be 4x
Volume of cuboid= height * length * breadth
= 4x * 5x * 16 = 1280m^3
=20x^2= 80
=x^2=4
=x=√4
∴ x=2
so height will be = 4x = 4 * 2 =8m
so breadth will be = 5x = 5 * 2 =10m