A triangular plate is located inside a rectangular box as displayed above. What is

a) the length of the side [[$ AB $]]?

Answer: The length of side [[$ AB $]] is cm.

b) the length of the side [[$ AC $]] ?

Answer: The length of side [[$ AC $]] is cm.

c) the length of the side [[$ BC $]] ?

Answer: The length of side [[$ BC $]] is cm.

d) area of the triangle?

Answer: The area of the triangle is cm[[$ ^2 $]].