3 years ago

A rectangle with dimensions of 3 units by 5 units is enlarged by a scale factor of 1.4 By what percent does its area increase?

Mathematics

2 answers:

Delicious77 [7]3 years ago

8 0

Answer:

128.(6)%

i think this is the ans

vodomira [7]3 years ago

3 0

$A_1=3*5=15\\
3.5*1.4=4.9\\
5*1.4=7\\
A_2=4.9*7=34.3\\
\frac{34.3}{15}*100\%=228.(6)\%\\
228.(6)\%-100\%=128.(6)\%$

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