Pedzisa mutsara unotevera nesarudzo yakanakisisa: nzira yokuwana nayo perimeter ye trapezoid  Zvaunogona kuita: - Perimeter = wedzera urefu hwemativi ose P = a + b1 + b2 + c x b1 - Perimeter = wedzera urefu hwemativi ose P = a + b1 + b2 + c  Mhinduro:
Perimeter = wedzera urefu hwemativi ose P = a + b1 + b2 + c