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I have posted a link there to this thread so the OP can view my work.Kellie discovers a burn in her new scarf. She decides the best solution is to cut off one corner of the scarf?

The scarf is a rectangle and the burn is located 2cm from one edge and 5 cm from a perpendicular edge, what is the smallest area of the triangle she has to cut off to remove the burn?

using optimization!