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Jonah58
22.03.2021 •
Mathematics
2. A poster is 15 cm taller than it is wide. It is mounted on a piece of cardboard so that there is a 10 cm border on all sides. If the area of the border alone is 950 cm, what are the dimensions or the poster?
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Ответ:
T = how tall
W = how wide.
T = W + 25 is the first equation
5
×
{
2
(
T
+
10
)
}
+
5
×
(
2
×
W
)
=
1350
This equation is the total height adding 5 for the top border and 5 for the bottom border. Then multiplying the total height by the width of the border 5, time 2 because there are two sides that are tall Then adding 5 times two widths.
Ответ:
3.14159265359
Step-by-step explanation: