Question

the perimeter of a rectangle is 60meters. if it length is twice its breadth then find its area​

Answer 1

Answer:

• 2(l+b)=60
• l=2b therefore if lenghth is 2x then breadth is x
• 2(2x+x)=60
• 2x3x=60
• 6x=60
• x=60/6
• x=10
• length=2x10=20
• breadth=1x10=10
• area=lxb
• 20x10=200cm2

Answer 2

Answer:

let breath be x

given length is 2x

so perimeter =2(L+B)

                      =2(2x+x)

                      =2(3x)

                      =  6x=60

                      x=60/6

                      x=10m

length =2x=2 x 10=20m

breath=x=10m

area =L x B

      =10 X 20

       =200m^2