To celebrate arbor day mrs. rochon's class will plant an oak tree in the school courtyard. the tree will be supported by three ropes staked in the ground 6 feet from the base of the tree. the ropes will be attached to the tree 5 feet up the trunk, forming a right triangle. use the pythagorean theorem to determine how long each piece of rope must be to support the tree. a. 3.3 feet b.7.0 feet c. 7.8 feet d.11.0 feet