морфемный разбор слова рождаются

Прошу помочь. сейчас ломаю над ней голову.

Задача.

Найдите площадь поверхности и сумму длин ребер куба, ребро которого 11см.

РЕШИТЕ УРАВНЕНИЕ! Спасибо!

(3х-1)(5х+4)-15х(во второй степени) = 17

Circle the correct form of the verb.
1.The tents ... last year.
a) bought b) were bought c) are bought d) was bought

2. A lot of faxes ... every day.
a) is sent b) were sent c) sent d) are sent

3. A lot of guests ... to the party next Saturday.
a) will be invited b) invited c) is invited d) invite

4. They ... the fax at 5 o’clock yesterday.
a) is received b) received c) will be received d) receive

Какое максимальное колличество треугольников можно построить с помощью 6 спичек? Примечание : Сторона любого из треугол. равна длине спички