Si loo xisaabiyo bedka saddexagalka iyadoo la adeegsanayo tibaaxaha aljabrada, waxaan u baahanahay inaan ogaano dhererka saldhigga iyo joogga saddexagalka. Aynu ka soo qaadno in saldhigga saddexagalka uu ka dhigan yahay doorsoomaha “b” dhererkana uu matalo doorsoomaha “h”.

Qaabka lagu heli karo bedka saddexagalka waa:

Aagga = (1/2) * salka * dhererka

Iyadoo la adeegsanayo doorsoomayaasha la bixiyay, aagga waxaa loo xisaabin karaa sida:

Aagga = (1/2) * b * h

Sidaa darteed, bedka saddexagalka waxaa lagu tilmaami karaa (1/2) * b * h.