Cho hình chóp
có
, đáy
là tam giác đều. Tính thể tích khối chóp
biết
,
.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img1.png)
![img2](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img2.png)
![img3](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img3.png)
![img4](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img4.png)
![img5](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img5.png)
![img6](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20193317772914357694/obj20193317772914357694531191_images/obj20193317772914357694531191_img6.png)
A.
B.
C.
D.
Đáp án và lời giải
Đáp án:B
Lời giải:
Phân tích: Diện tích tam giác đáy Thể tích V của khối chóp S.ABC:
.
Vậy đáp án đúng là B.