Question

Giúp me

Answer 1

A

A

Answer 2

A

A

Answer 3

A

A

Answer 4

3.A

4.A

Answer 5

A a

 

Answer 6

A

Answer 7

A

A

Answer 8

A

A

Answer 9

A

A

Answer 10

A

A

Answer 11

a,a

Answer 12

A

A

Answer 13

A

A

Answer 14

3.A.\(\dfrac{10}{31}\)
4.A.140cm²

Answer 15

3. A         4. A 
Chúc bạn học tốt

Answer 16

A

A

Answer 17

a

a

Answer 18

A

A

Answer 19

A

A