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Sagot :
Answer:
(a) 85m
(b) 61cm
Step-by-step explanation:
(a) We know that the formula for the perimeter of a rectangle is [tex]2(a+b)[/tex], where a is the length and b is the width, or vice versa. So for this garden, [tex]2(a+68)=306\\a+68=153\\a=85[/tex](m)
(b) We know that the formula for the area of a rectangle is [tex]L*W[/tex], where L is the length and W is the width. Note that these values are interchangeable, e.g. 2*3=3*2=6. So for this window,
[tex]84*W=5124\\W=61[/tex](cm)
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