Amidsegment of a triangle measures 12 1/2feet. what is the measure of the corresponding base of the triangle?

Multiplying an even number of negative numbers gives an answer that is choose from:

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

Can someone me with this problem . show your work .