a, chim én

b, Chim sâu

c, Chim bồ câu

d, Chim cú mèo

e, Chim công

If I could be the leader of the school's Green Club, I would plant a lot of trees to protect the environment, propagandize people not to cut down forests, and not to throw garbage indiscriminately. Love the environment by greening bare hills. Criticize those who do not destroy the environment

Tam giác ABC cân tại A => AB = AC = 5cm

Áp dụng định lí Pytago vs tam giác AHB ta cs

\(AH^2+BH^2=AB^2\\ =>BH=\sqrt{Ab^2-AH^2}=\sqrt{5^2-4^2}=3cm\)

Áp dụng định lý Pytago vs tam giác BHCcs

\(BH^2+HC^2=BC^2=>BC=\sqrt{BH^2+HC^2}=\sqrt{3^2+1^2}=\sqrt{10}cm\)

=')))

cái này lm r mak

1-kangaroo

2-golila

3-panda

4-elephant

5- tiger

0,1    0,2    0,3   0,4  0,5  0,6   0,7  0,8  0,9  

1-E

2-D

3-F

4-A

5-C

6-B

A