Предмет: Математика, автор: поликсавурик666

Длина прямоугольного участка 120 м,щирина составляет 75% длины. Вспахали 35% участка. Какую площадь участка осталось вспахать?

Ответы

Автор ответа: kir3740

A = 120
B = 0.75*120 = 90
S = 120*90 = 10800

Вспахали
0.35S = 0.35*10800 = 3780
Осталось
10800-3780 = 7020 м^2

Ответ 7020 квадратных метров

Автор ответа: поликсавурик666

так 120*90 это не 10800? на калькуляторе так

Автор ответа: GHGDRTRS

1 га = 10 000 м2 L=120 м Z=75% *120 =90 м S = 120*90* (100-35)% =7020 м2 =0,702 га

Автор ответа: GHGDRTRS

ЧТО ТУ НЕ ПОНЯТНОГО? сначала в скобках отнеми, а потом 120*90* на полученное число и получется это число

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