Предмет: Математика, автор: svetap379

Коло має центр в початку координат та проходить через точку А(5:12). Запишіть рівняння кола та знайдіть площу правильного трикутника, вписаного в це коло. ​

Ответы

Автор ответа: palilov243659
1

Ответ:

Пошаговое объяснение:

x²+y²=R²

R²=X²a+Y²a=25+144=169,

рівняння кола x²+y²=169

площa правильного трикутника, вписаного в це коло S=a²√3/4

a=R√3

S=3R²√3/4=3×169×√3/4=126.75√3≈219,537

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