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30 tháng 10 2021
uses crt;
var xa,ya,xb,yb,xc,yc,p,s,ab,bc,ac:real;
begin
clrscr;
readln(xa,ya,xb,yb,xc,yc);
ab:=sqrt(sqr(xa-xb)+sqr(ya-yb));
ac:=sqrt(sqr(xa-xc)+sqr(ya-yc));
bc:=sqrt(sqr(xb-xc)+sqr(yb-yc));
p:=(ab+bc+ac)/2;
s:=sqrt(p*(p-ab)*(p-ac)*(p-bc));
writeln(s:4:2);
readln;
end.
TT
2
4 tháng 10 2021
It's on the twenty-fourth of October mik cung hc lop 4
và ai giải thích hộ tui là buff là j vs ạ,còn spam nữa!(đây cx là câu hỏi nha)
18 tháng 6 2023
6:
a: BC=căn 9^2+12^2=15cm
b: Xét ΔBAM và ΔBIM có
BA=BI
góc ABM=góc IBM
BM chung
=>ΔBAM=ΔBIM
=>MA=MI
=>ΔMAI cân tại M
30 tháng 3 2020
Part 4: QUESTIONS 16-23: Read the information about Schnauzer dogs. Choose the best word (A, B or C) for each space (16-23). For questions 16-23, mark A, B or C on the answer sheet.
Schnauzer Dogs
There are three sizes (0) ………… Schnauzer dog. The two smaller sizes first (16)………….. to England over 50 years ago, but the Giant Schnauzer has not (17)…………. here very long. The name Giant is a good one because the dogs are 65 to 67.5 cm high. All the dogs (18)…………. long hair, which shoukd be cut quite often. Most smaller Schnauzers (19)…………… grey in colour, (20)………….. the Giant Schnauzer is usually black. Schnauzers come from Germany, where farmers use the dogs to help (21)…………… with their sheep, and they are also used (22)………….. the police, because Schnauzer dogs are very intelligent. A Schnauzer makes (23)…………… nice family dog. It is friendly and very good with young children.
0. A. with B. of C. in
16. A. came B. come C. comes
17. A. being B. be C. been
18. A. has B. have C. had
19. A. were B. is C. are
20. A. or B. if C. but
21. A. them B. him C. us
22. A. from B. by C. to
23. A. the B. a C. any
PART 5 : QUESTIONS 24-33: Complete this letter. Write ONE word for each space (24-33). For questions 24-33, write your words on the answer sheet.
28 Long Road Brighton 22nd March
Dear Pat,
I arrived (Example : here) three weeks ago. I’m studying at a language school (24) in Brighton. The students come (25) from many diffirent countries and I (26) have made a lot of new friends. There (27) are classes for five hours every day. I (28) my teacher very much. (29)His name is John and he helps me (30) when I make mistake. I want (31) to visit London next weekend because I (32) am going Bck to my country on Monday. Can I see you there ? Please write to (33) me soon. With best wishes from Maria.
ND
2
13 The room will be decorated for her birthday by us
14 I used to eat a lot of ice-cream when I was a child
15 Although she didn't have a lot of money, she bought the car
16 This is a book of mine
17 When is the film showed?
18 These are socks of hers
19 More trees will be planted in the chool yard by them
20 She used to be a model before becoming an actress
13.The room will be decorated for her birthday by us
14.I used to eat a lot of ice-cream when I was a child
15.Although she didn't have a lot of money, she bought the car
16.This is a book of mine
17.When is the film showed?
18.These are socks of hers
19.More trees will be planted in the chool yard by them
20.She used to be a model before becoming an actress