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podryga [215]
3 years ago
10

Please answer this !!!

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
3 0

Answer: 8%

Step-by-step explanation:

The perimeter will be 2*(30+20)=2*50=100 cm

The new length will be 30+30*10/100=30+3=33  cm

The new width will be 20+20*5/100=20+1=21  cm

The new perimeter will be 2*(33+21)=2*54=108  cm

so  108=100+x*100/100

it  will increase  by x= (108-100)*100/100 % =8%

LenKa [72]3 years ago
3 0
8% is the answer to your question
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