Предмет: Геометрия, автор: Donald200

Найдите длины неизвестного отрезка по данному рисунку.

Приложения:

Аноним: 24

Ответы

Автор ответа: Nangw

Решение:

1) АО=ОВ=R=CD/2=40/2=20

2)OD=20 ⇒ ОМ = 20-4 = 16

3) Р/м ΔАОМ: ∠М=90°, по т.Пифагора: $AM=\sqrt{20^{2} -16^{2} } =\sqrt{400-256} =\sqrt{144} =12$

4) АВ=АМ+МВ=12+12=24

Ответ: 24

Приложения:

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