a photograph 8cm high and 6cm wide is enlarged to give a poster 18cm wide. What is the height of the poster? Calculate the ration of the area of the photograph to the area of the poster.
Thank you so much for your help,
Answers
Answered by
0
Answer:
1:9
Step-by-step explanation:
height of the poster: (8/6)×18=24
area of photo: 8×6=48
area of poster: 18×24= 432
ratio of area of photograph to area of poster
= 48:432
= 1:9
to double check answer:
48/8 + 18/6= 9 (and this tallies with the answer above)
hope this helped!! :)
Answered by
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..hight.............wide
8 ..................6
x................18
x=18/6x8=24cm
heights: 24cm
x=8/6x18=24cm
Area of Photograph=8x6=48cm2
Area of poster=24xl8=432cm2
Ratio = 48:432=1:9
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