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Sagot :
Answer: A. [tex]3\sqrt{5}[/tex]
B. l=[tex]6\sqrt{5}[/tex], w=[tex]3\sqrt{5}[/tex]
Step-by-step explanation:
A. A=l*w
l=2w
A=2w*w
90=2w*w
w*w=45
w=[tex]\sqrt{45}[/tex]
w=[tex]\sqrt{9*5}[/tex]
w=[tex]3\sqrt{5}[/tex] ==> Square length and the rectangle width
B. 90=l*w
90=l*[tex]3\sqrt{5}[/tex]
30=l[tex]\sqrt{5}[/tex]
l=[tex]\frac{30}{\sqrt{5} }[/tex]
l=[tex]\frac{30\sqrt{5} }{5}[/tex]
l=[tex]6\sqrt{5}[/tex], w=[tex]3\sqrt{5}[/tex]
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