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4 years ago

12. A photocopier enlarges by a ratio of 7: 4. A picture

Mathematics

1 answer:

Pavlova-9 [17]4 years ago

7 0

Answer: 2 enlargments

Step-by-step explanation:

Use proportion for each enlargment you do

Side a=6cm Side b=4cm

6:4=x:7 4:4=b1:7

7*6=4a1 b1=28/4

a1=42/4 b1=7 after first enlrge

a1=10.5 after first enlarge 7:4=b2:7

10.5:4=a2:7 b2=49/4

a2=73.5/4 xb2=12.5 after 2nd enlarge

a2=18.375 after 2nd enlarge

12.5:4=b3:7

18,375:4=a3:7 b3=21.875 cm after 3rd enlargement

a3=32.15after 3rd enlargement

Values after 3rd enlargement are higher than dimension given for picture wall

30 cm by 20 cm

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