Daca e dr in M si N e de 30 atunci MP este NP/2=6cm Apoi aplici pitagora astfel MN2=144-36 MN=\/108 MN=6\/3 Apoi aplici teorema catetei astfel obtii QPxNP=36 QP=36/12=3 Apoi aplici pitagora in QMP MQ2=36-9 MQ=\/25 MQ=5cm P= MN +NP+MP=18+6\/3=6(3+\/3)cm
