flippinhailey
06.11.2020 •
Mathematics
a photograph of sides 35cm by 22cm is mounted into a frame of external dimension 45cm by 30cm find the area of the border surrounding the photograph
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Ответ:
Let's calculate the area of the photograph:
A = 35cm * 22cm = 770 cm^2
Now let's calculate the area of the frame:
A = 45cm * 30cm = 1350 cm^2
Finally:
A = 1350cm^2 - 770cm^2 = 580cm^2
Ответ:
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