Please help with this ASAP! Please give an actual answer and show your work, I want to be able to understand how the problem is done, 35 points thank you very much.

Answer:
The answer would be 60cm.
Step-by-step explanation:
If triangle ABC has a side length of 4 cm and the area is equal to 40, the triangle PQR with a side length of 6 cm would have an area of 60.