Question

length of rectangular field is 4 meter less than 3 times it's breath if the perimeter is 72 find it's area​

Answer 1

Answer:

perimeter of rectangle = 2(l+b)

l=3b-4

2(3b-4+b)=72

6b-8+2b=72

8b -8 = 72

8b = 80

b= 10

therefore

l =3b-4

l= 30-4

l=26

perimeter =2(l+b)

2(26+10)

2*36

=72

Area = l*b

=26*10

260 metre square