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Please explain these math questions!

1) How many cm2 in 1m2?
2)How much are 7 pencils at 3 for $1.65
3) Is a hectare roughly equal to 2 tennis courts or 2 soccer fields?
4) Add all the odd numbers between 20 and 30. (I don't understand)
5) How many axes of symmetry has a rhombus?

Sagot :

mumsy
1.  1m=100 cm
1m^2= 10,000 cm^2

2.  if 3 pencils are 1.65, then 1 pencil is 1.65/3=$ 0.55
7 pencils will cost 7* $0.55= $3.85

3.1 ha is 10,000 m^2, and 1 soccer filed is roughly 100m *110 m
so it makes sense that 1 ha is roughly 2 tennis courts
4.odd numbers between 20 and 30 are
21,23,25,27,29
lets add the,m
21+23+25+27+29=125
5 a rhombus has 2 lines of symmetry 
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