Question

Answer 1

Câu 3:

a: \(\left(x+23,5\right):3,2=137,7:4,5\)

=>\(\left(x+23,5\right):3,2=30,6\)

=>\(x+23,5=30,6\times3,2=97,92\)

=>x=97,92-23,5=74,42

b: \(x:\left(28-24,5\right)=1,656:0,36\)

=>x:3,5=4,6

=>\(x=4,6\times3,5=16,1\)

Câu 1:

a: \(235,2m^2=0,02352ha\)

\(520m^2=5,2dam^2\)

5,6ha=0,056\(\operatorname{km}^2\)

\(4567m^2=0,4567ha\)

a: \(9,014\operatorname{km}^2=901hm^24000m^2\)

\(2,82m^2=0,000282hm^2\)

5,34m=534cm

3,6dam=0,036km