Is a big bus which you can take to travel from one city to another. *
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Это обязательный вопрос.
You don't need to go to to book the flight, you can do it on the Internet. *

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When you want to travel abroad, you have to your flight and hotel beforehand. *

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Look at the flight ticket and find the following information. *

Подпись отсутствует
London January 19 Amsterdam March 13 03:10 pm 18:50
The city of destination
The city of departure
Date of the flight
Time of departure
The city of destination
The city of departure
Date of the flight
Time of departure
There is no flight from Liverpool to Bangkok, you have to in Milan. *

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Write the question to the answer. - It takes me 15 minutes to get to school by car. *


1. We need to decide how to celebrate your birthday,

2 You needn't to go to the shop. I have bought everything we need.

3. Pupils must wear uniforms at school. It's a rule!

4. They don't have to cook dinner. Mother has done it.

5. People mustn't cross the street when traffic lights are red!

6. You have to do morning exercises! It's very useful!

7. May I take your pen? I have lost my pen

8. My friend can't speak English, but he speaks French.

9. You shouldn't go out if you feel not very well.

10. I should to take my umbrella, it's raining

Объяснение:

the side surface of this pyramid consists of 6 isosceles triangles with a base 16 and a side 17.

Find the area of one triangle.

S = 1/2bh, where b is the base and h is the height.

The height is found by the Pythagorean theorem.

The height is equal to the square root of the difference between the squares of the side of the triangle and the half of the base. Half of the base 16 / 2 = 8

17*17 - 8*8 = 225. The square root of 225 is 15. The height of the triangle is 15. Then the area of the triangle will be equal to S = 1/2*16*15 = 120 and the area of the side surface of this pyramid is equal to the area of one triangle multiplied by 6. S1 = 120 * 6 = 720