Предмет: Геометрия, автор: lilpollizy

Ромб делится диагональю на два равносторонних треугольника. Длина этой диагонали равна 20. Найти длину другой диагонали ромба .

bertramjeratire: √(20²-10²)=√((20-10)(20+10))=√(10×30)=√300=10√3

bertramjeratire: 10√3 это половина другой диагонали, вся диагональ 20√3

Ответы

Автор ответа: SuperTrail

0

Ответ:

20sqrt(3) – вторая диагональ.

Объяснение:

Диагонали делят друг друга пополам. рассмотрим треугольник - его высота = корень из разности квадратов стороны и половины известной диагонали, которая равна всем сторонам ромба, т.к. является частью треугольников, на которые она делиться.

Автор ответа: AtillaNazarov

0

Ответ:

$20 \sqrt{3}$

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