Предмет: Геометрия, автор: tscareva30

Найти площадь прямоугольника

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Ответы

Автор ответа: Аноним
0
∠АВЕ = 90° - 60° = 30°
АВ - гипотенуза, АЕ - катет, лежащий против угла в 30°, он равен половине гипотенузы. Таким образом, гипотенуза АВ в 2 раза больше катета АЕ, то есть АВ = 2 · 2,5√3 = 5√3.
Площадь прямоугольника равна
S = АВ · ВС = 5√3 · 15 = 75√3
Ответ: 75√3
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