Предмет: Математика, автор: Leywwwlax

знайдіть площу заштрихованої частини на малюнку,допоможіть будь ласка! дам 20 балів

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Ответы

Автор ответа: ildar502020
1

Ответ:   12.86 см^2.  

Пошаговое объяснение:

Искомая площадь равна S=s1-s2, где

s1=4^2 = 16 см^2 - площадь квадрата.

s2=4*(1/4)πR^2 - Четыре 1/4 части площади круга с радиусом 1 см.

Тогда

S=16 - π*1^2= 16 - 3.14 = 12.86 см^2.  

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