Question

If the lenght of rectangular field is greater than its breadth by12cm.find the area of the rectangular field.If perimeter is 312m

Answer 1

let breadth=x
therefore length=x+12
1m=100cm
312m=312*100cm
=31200cm

perimeter of rectangle=2(l+b)
2(l+b)=31200cm
l+b=31200/2
(x+12)+x=15600
x+12+x=15600
2x+12=15600
2(x+6)=15600
x+6=15600/2
x=7800-6
x=7794
x+12=7794+12
=7806

breadth=x=7794cm
length=x+12=7806cm

area of rectangle=l*b
=7794*7806
=60839964cm^2

Answer 2

hope this helps you .....