RoseLea123 RoseLea123

17-12-2016
Mathematics

Answered

Help needed, have no idea.

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Verified Answer :

howudoing howudoing

17-12-2016

in 1st fig
A=5×x(let)
9=5×x
in 2nd fig
A=10×2x(5 is doubled so ×also doubled)
A=10×2×9÷5
A=36

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