Предмет: Геометрия, автор: lololo5shka4

допоможіть будь ласка

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Автор ответа: cathetinka

1

рівняння кола (x-a)^2+(y-b)^2=R^2, в рівнянні точки a i b це координати центра кола, а R це радіус. тому
а)радіус кола = 5, координати центра кола (0;0)
б)радіус=10, центр (-4;7)
в)радіус=корінь з 2, центр (0;-3)

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