Question

Me ajuda.
Responde só as que vcs souberem, muito obrigada

Answer 1

8º)

a)2,5*2=5

5*3,14=15,7

resp:15,7

b)3,14*10=31,4

resp:31,4

9)4*3,14=12,56

resp: 12,56

10)

10*3,14=31,4

16*3,14=50,24

50,24-31,4=18,84

resp:18,84

11)

1,2*3,14=3,768

1,2*1=1,2

1,2+3,768=4,968

resp:4,968

12)

a)

4*3,14=12,56

12,56/2=6,28

resp:6,268

b)

13)

4*3,14=12,56

4*8=32

32-12,56/2

32-6,28=25,72

resp: C

14)

260*3,14=816,4

816*4=

resp: A

15)

5*3,14=15,7

15,7*3=47

5*15=75

75-47=28

resp:28