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Please help me before my math teacher calls me out again

Please help me before my math teacher calls me out again-example-1
User TheNovice
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1 Answer

5 votes

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

Work out the original area:

(5 x 18) / 2 = 45cm^2

Increase/decrease the changed values:

18 x 0.7 = 12.6

5 x 1.2 = 6

New area:

(12.6 x 6) / 2 = 37.8cm^2

Calculate percentage change:

((45 - 37.8) / 45) x 100 = 16

16% decrease

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User Marsh
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