Question

the lenght and breadth of therectangular field isin ratio 7:4 .fin the lenght and breath of it and cost of fencing whose rate is 150 rs. per m​

Answer 1

$\huge\bold\green{Answer↓↓}$

$\small\bold\red{Perimeter \ of \ rectangle=2(L+B)}$

$\small\bold\red{Let \ the \ L \ and \ B \ be \ 7x \ and \ 4x}$

$\small\bold\red{2(7x+4x)}$

$\small\bold\red{2(11x)}$

$\small\bold\red{22x}$

$\small\bold\green{Length=7x \ ×22}$

$\small\bold\green{Length=154}$

$\small\bold\green{breadth=4x \ ×22}$

$\small\bold\green{breadth=88}$

cost of fencing

150×154= ₹23100(length)

150×88= ₹13200(breadth)

=> ₹36300(total)

Answer 2

$\huge\bold\blue\ {Answer!}$

length=7x

breath=4x

perimeter of rectangle=2(l+b)

2(7x+4x)

2(11x)

22x

length=7×22=154m

breath=4×22=88m

cost of fencing= ₹150 per metre

length=150×154= ₹23100

breath=150×88= ₹13552

total cost=23100+13552=₹36652

$\huge\bold\blue\ {hope\ it\ helps!}$