Вопрос школьника по предмету Математика
ПОМОГИТЕ ПЖ!!!!!!
Вычислите площадь круга и округлите ответ до целых, радиус R=5см
(п≈3,14)
ДАЮ 15 БАЛЛОВ!!!!!!
ОЧЕНЬ СРОЧНО!!!!!!
Ответ учителя по предмету Математика
Ответ:
246,49
Пошаговое объяснение:
Площадь круга мы находим с помощью формулу ПR в квадрате
5 умножаем 3, 1 4 в квадрате = 15, 7 умножаем на 15, 7 = 246, 49.
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Слова: became, got, happened, found, built, created, made, drew, explored.
1)e²-24e+144
2) q²+30q+255
3)b²-30b+225
4)s²-34s+289
5)a²-56a+784
6)x²+46x+529
7)u²-22u+121
Choose the correct item.
1. He has got little/few friends.
2. I don’t like coffee. I drink much/little coffee.
3.Rob wrote so much/many letters that he’s never going to write a letter again.
4. There is a little/a few milk in the bottle.
5. I have little/few time.
6. There are a lot of/much paintings in my grandma’s living room.
7. There was too many/little light in the room so I couldn’t read.
8.His father doesn’t earn much/many money but he loves his job.
9.That man drank so … wine, and he smoked so … cigarettes that he has a terrible headache today.
1)(c+2)(c-3)-(c+2)(c+3)
2)(p+4)(p-11)+(p+6)²
3)3(x-5)²-(8x²-10x)
4)7(2y-5)²-2(7y-1)²