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Sagot :
[tex]Perimeter=2Length+2Width \\ P=2(L+W) \\ 50=2(L+10) \\ 25=L+10 \\ L=25-10 \\ \boxed{L=15cm} [/tex]
Ok, so,, if the p=50, it means that l+l+w+w=50. (l is length and w is width.)
In simpler form, 2xl+2xw=50. In this case, we know that the width is 10. So,
2xl + 2 x 10= 50
2 x l +20=50.
Now we subtract 20 on both sides to get l alone.
2 x l=30
length= 30 divided by 2, or 15
:-)
In simpler form, 2xl+2xw=50. In this case, we know that the width is 10. So,
2xl + 2 x 10= 50
2 x l +20=50.
Now we subtract 20 on both sides to get l alone.
2 x l=30
length= 30 divided by 2, or 15
:-)
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