can you please, Write an equation to find the value of x so that each pair of polygons has the same perimeter. Then solve

Does anyone know how to do geometryme with this problem

What is the total area of the figure?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point