Предмет: Геометрия, автор: sagnaevaj

определите площадь круга, если сторона большого квадрата равна 8см
а)12
в)9
г)16
д)8
е)14

Приложения:

Ответы

Автор ответа: kirichekov
0

Ответ:

S = 8 π см ^2

Объяснение:

a=8 см

d=a√2 см - диагональ большОго квадрата

d = 8√2 см

a1 = d/2 - сторона мЕньшего квадрата - средняя линия треугольника

а1 = 4√2 см

a1= d1 - диаметр круга

d 1= 4√2 см

R=d1/2

R = 2√2 см

S=πR^2

S=π×(2√2)^2

S=8π см^2

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