1) Длина прямоугольника равна 12 см, ширина составляет 2/3 от длины. Найдите периметр прямоугольника.
2) Длина прямоугольника равна 8 см, ширина составляет 40%
от длины. Найдите периметр прямоугольника.
kostenkoulana7
1
03.09.2020 22:50
4
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1
Пошаговое объяснение:
12*2/3=8 (це ширина) тоді Р (периметр) буде:2*12+2*8=24+16=40
2)8*0,4=3,2 (ширина) Р=2*8+2*3,2=16+6,4=22,4