help needed by maths dunce

Hi, well my boss has asked me to order some materials for a roofline and i'm scared of heights :sick:

The roof is a gable end with a pitch of 30 degrees and it is 8m in total (ie 2 pitches with 4m along the horizontal plane) the cladding comes in 5m lengths so i'm wondering whether 2 lengths will be enough? or will i need to buy 3 lengths (if the longest/pitched sides are more than 5m)

thanx in advance (i hope) :)

How wide are these 5m lengths?

Hi S.E.

oops! that is a valid factor :)

The cladding is 200mm wide.