Cho hình chóp S.ABCD có đáy ABCD là hình vuông có cạnh \(a\) và SA vuông góc đáy ABCD và mặt bên (SCD) hợp với đáy một góc \(60^0\). Tính thể tích hình chóp S.ABCD.

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Một số câu hỏi khác có thể bạn quan tâm.

• Sóng ngang là sóng có phương dao động của các phần tử môi trường và phương truyền sóng hợp với nhau 1 góc

• Cho . Tìm m để hàm số của hai điểm cực trị A, B sao cho khoảng cách từ M (2; –5) đến đường thẳng AB lớn nhất.                   

• If I had known you were in hospital, I ________to see you.

• Anne says that she reads about half ________ hour a day, at least.

• Kênh đào Pa-na-ma được Hoa Kì trao trả hoàn toàn cho nhân dân Pa-na-ma vào năm
  
• Vai trò của gia cầm:
  
• Quan tâm, chia sẻ với những người xung quanh, trước hết là những người trong gia đình, thầy cô giáo, bạn bè, làng xóm láng giềng là biểu hiện của
  

• It’s time __________a car. It’s too far to cycle.

• Read the passage and choose the correct answer:
  Telecommuting is some form of computer communication between employees' homes and offices. For employees whose jobs involve sitting at a terminal or word processor entering data or typing reports, the location of the computer is of no consequence. If the machine can communicate over telephone lines, when the work is completed, employees can dial the office computer and transmit the material to their employers. A recent survey in USA Today estimates that there are approximately 8. 7 million telecommuters. But although the numbers are rising annually, the trend does not appear to be as significant as predicted when Business Wee, published "The Portable Executive" as its cover story a few years ago. Why hasn't telecommuting become more popular?
  Clearly, change simply takes time. But in addition, there has been active resistance on the part of many managers. These executives claim that superrising the telecommuters in a large work force scattered across the country would be too difficult, or at least, systems for managing them are not yet developed, thereby complicating the manager's responsibilities.
  It is also true that employees who are given the option of telecommuting are often reluctant to accept the opportunity. Most people feel that they need regular interaction with a group, and many are concerned that they will not have the same consideration for advancement if they are not more visible in the office setting. Some people feel that even when a space in their home is set aside as work area, they never really get away from the office.
  Question. With which of the following topics is the passage primarily concerned?
  
• Nhà Nguyễn đã đối xử với Phật giáo và tín ngưỡng dân gian như thế nào?