the area of rectangular plot is 2400 square meters and its length is 3/2 times to its breadth what is perimeter
Answers
Answered by
42
l=3/2b
area=lb
=3/2b square
given area 2400
then 2400=3/2b square
1600=b^2
40m=b
then l =3/2*40=60m
peri=2(l+b)
=2(60+40)
=2 *100
200 meters
area=lb
=3/2b square
given area 2400
then 2400=3/2b square
1600=b^2
40m=b
then l =3/2*40=60m
peri=2(l+b)
=2(60+40)
=2 *100
200 meters
Answered by
16
case i case ii
breadth= x. Perimeter= 2(l+b)
length = 3x/2. = 2( 40+60)
area = 2400m². = 2*100
x*3x/2 = 2400. = 200m
3x²/2 = 2400
3x² = 2400 * 2 = 4800
x² = 4800/3 = 1600m = 40²
x= 40m
breadth = 40m
length = (3*40)/2
= 120/2 = 60m
breadth= x. Perimeter= 2(l+b)
length = 3x/2. = 2( 40+60)
area = 2400m². = 2*100
x*3x/2 = 2400. = 200m
3x²/2 = 2400
3x² = 2400 * 2 = 4800
x² = 4800/3 = 1600m = 40²
x= 40m
breadth = 40m
length = (3*40)/2
= 120/2 = 60m
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