Question

find the cost of fencing a rectangular garden at the rate of Rs 7.50 per metre. If its length and breadth are in the ratio 4:3 and its area is 12 cm square​

Answer 1

Step-by-step explanation:

perimeter-2(l+b)

-let ratio be x

area-l*b-12

4x*3x=12

x=12/4*3

x=1

length=4cm, breadth=3 çm

perimeter=2(l+b)=2(4+3)=14cm

cost of fencing 14 cm =14*75/10=105rupees