Предмет: Математика, автор: kristina747

на сколько процентов увеличится объем куба,если каждое ребро увеличить на 40%?

Ответы

Автор ответа: СамойловаЛариса

Vk = a^3, значит, если ребро увеличить на 40% ( а будет равно 1,4а), то объем станет

Vк = (1,4а)^3

если а^3 - 100%

(1,4a)^3 - x%

x = (1,4a)^3 * 100 / a^3 = 274,4%

значит объем увеличился на 174,4 %

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