E maths - Conversion

• bonkysleuth

  9 May 09, 09:23

  Convert 120 cm2 to square millimetres.

  My answer is 12000mm2 but my TYS''s answer says it is 1 200 000. Any mistakes?

• syncopation_music

  9 May 09, 09:42

  1cm = 10 mm

  100 cm = 100 x 10

              = 1000 mm

  120cm2 = [1000 x 1000] mm2

                = 1 200 000

   

  got it ?

   

• deepak.c

  9 May 09, 10:49

   

  I used my handphone conversion 120 cm²  = 12,000 mm².

   

  120 cm² = (10 X 12)cm² = (100 X 120)mm² = 12,000mm²

   

   

   

• nightzip

  9 May 09, 11:19

  1cm2 = 10x10 mm2, so 120x1cm2 = 120cm2 = 120x(10x10)mm2 = 12000 mm2.
• eagle

  9 May 09, 11:43

  Originally posted by nightzip:

  1cm2 = 10×10 mm2,

  so 120×1cm2 = 120cm2 = 120x(10×10)mm2 = 12000 mm2.

  yup this is the correct answer

  12000 mm²

• syncopation_music

  9 May 09, 12:50

  my mistake ... i am not focusing on conversion .. sorry :)