1. if i stretch my .25 meter resistance band .12 meters, whaat is its % strain?

2.if i stetch my .25 meter resistance band 1.2 meters what is its % strain

3. my active dorsi flexors result in 100 lbs of tensile force on my achilles tendon which has an area of 2 cm^3 how much stress is it experiancing? Mpa please

4. my biceps pulled on my flexor tendon with 300 lbs of force. if my tendon has an area of 1.5 cm^2 how much stress is it experiancing in mpa?