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nadinealonzo7853
19.04.2021 •
Mathematics
Can you guys please help me im really stressed
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Ответ:
Square
Step-by-step explanation:
Perimeter of a rectangle is
P=2(l+w)
Where l is length and w is width
Substituting 50 for P
50=2(l+w)
25=l+w
Making w the subject of formula then
w=25-l
Area is lw and substituting for w
A=l(25-l)=-l²+25l
A=-l²+25l
Getting firat derivative of A with respect to l
-2l+25=0
l=25/2=12.5 yards
Width will be 25-12.5=12.5 yards
The dimensions of length and width are same hence the shape is square