Question

nacherti pryomougolnik so storonami 5sm 8mm i 3sm 3mm.vichisli ego perimetr

Answer 1

perimetr pryamouqolnika raven 2×(a+b)
5 sm 8 mm raven 58 mm
3 sm3 mm raven 33mm
2×(58+33)=2×91=182
otvet raven 18 sm 2 mm