Question

A rectangular piece of metal with sides 24cm and 18cm costs ₹1080.how much will a square piece of the same metal of side 16 cm cost if the cost of metal is proportional to its area ?​

Answer 1

Answer:

cost of square piece = rs 640

Step-by-step explanation:

area of rectangle = l×b=24×18= 432 sq.cm

cost of rectangular piece of metal =₹1080

given , cost of metal is proportional to its area

so, cost per cm of rectangular piece = 1080/432 = ₹2.5

Area of square = side×side = 16×16 =256sq.cm

cost of 256sq.cm square piece if cost per cm is ₹2.5= 256×2.5= ₹640