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Perimeter =80
2(l+b)=80
l+b=40
L=40-b
We know that area=lb
40-b*b=400
40b-b²=400
40b-b²-400=0
-b²+40b-400=0
b²-40b+400=0
b²-20b-20b+400=0
b(b-20)-20(b-20)=0
(b-20)(b-20)=0
b=20
L=40-20=20
We can design a rectangular park by using given measurement.
2(l+b)=80
l+b=40
L=40-b
We know that area=lb
40-b*b=400
40b-b²=400
40b-b²-400=0
-b²+40b-400=0
b²-40b+400=0
b²-20b-20b+400=0
b(b-20)-20(b-20)=0
(b-20)(b-20)=0
b=20
L=40-20=20
We can design a rectangular park by using given measurement.
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Step-by-step explanation:
Perimeter =80
2(l+b)=80
l+b=40
L=40-b
We know that area=lb
40-b*b=400
40b-b²=400
40b-b²-400=0
-b²+40b-400=0
b²-40b+400=0
b²-20b-20b+400=0
b(b-20)-20(b-20)=0
(b-20)(b-20)=0
b=20
L=40-20=20
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