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МатематикаВопрос:
7) The image shows a parallelogram ABCD. Side AB is marked with double hash, and side CD is also marked with double hash. Side AD is 14, and side BC is marked with triple hash, and also given as 21. Calculate the perimeter.
Ответ:
Краткое пояснение:
Дан параллелограмм ABCD. Сторона AD = 14. Сторона BC = 21. В параллелограмме противоположные стороны равны, поэтому AD = BC и AB = CD. Из данного следует, что AD не равно BC, что противоречит свойству параллелограмма. Однако, если принять, что 14 — это одна пара сторон, а 21 — другая, то можно вычислить периметр.
Решение:
- Шаг 1: В параллелограмме противоположные стороны равны. Примем AD = 14 как одну пару сторон, и AB = 21 как другую пару сторон.
- Шаг 2: Периметр параллелограмма вычисляется по формуле: P = 2 * (AD + AB).
- Шаг 3: Подставляем значения: P = 2 * (14 + 21) = 2 * 35 = 70.
Ответ: 70
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