Answer:

Step-by-step explanation:
Jaime is at point A and wants to get across the river to Point B.
They must head upstream towards Point C.
1. Calculate the net speed across the river.
∆ABC is a right triangle, so

2. Calculate the time to cross the river

The answer is: t<span>he triangles are not similar.</span>
Surface area of a cube = 6l²
Now given length = l = 8 mm
= 6*8² = 6*64 = 384 mm².
Thank you !!