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The area of some shape varies directly with the square of its side. If a shape with 2cm sides has an area 10cm^2,what would be the area of a shape ofthe same type with side of 3cm.

  • math -

    10=k*2^2 or k= 2.5

    area= 2.5*3^2=2.5*9= you do it.

  • math -

    thank you, i think i got it now.

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