Предмет: Математика, автор: aaaleeenaaa

ширина прямоугольника 1/4 метра, что на 3/10 метра меньше длины. найдите его периметр

Ответы

Автор ответа: 25hjoerf10

0

1/4 + 3/10 = 10/40 + 12/40 = 22/40 = 11/20 (м) - длина.
P = (a + b) * 2
(1/4 + 11/20 ) * 2 = (5/20 + 11/20) * 2 = 16/20 * 2 = 1.6 (м) - периметр.
Ответ: 1,6 м.

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