the area of a rectangular plot is 2400 cm2 and it's breadth is 1 and 1/2 times to its breadth. find the perimeter
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area of rectangular plot = L*B
l*b= 2400 -------(1)
if length= X
breath = 1and 1/2 X------(2)
there fore,
putting value of 2 in 1
3/2b x b = 2400
3/2b²= 2400
b²= 2400x2/3
b²= 800x2=1600
b=40 cm
length = 40*3/2
=60 cm
perimeter= 2(l+b)
=2(60+40)
=100*2
= 200 cm.
l*b= 2400 -------(1)
if length= X
breath = 1and 1/2 X------(2)
there fore,
putting value of 2 in 1
3/2b x b = 2400
3/2b²= 2400
b²= 2400x2/3
b²= 800x2=1600
b=40 cm
length = 40*3/2
=60 cm
perimeter= 2(l+b)
=2(60+40)
=100*2
= 200 cm.
rajasekhar5:
but how did you find breadth as 40m
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