Question

A wall is 4.5 m long and 2m high.Find the cost of white-washing on both sides if the cost of white-washing is ₹7.50 per square metre​

Answer 1

So first find area the is L × B so 4.5×2= 9m square we multiple 9 by because the both side so total area is 9×2= 18m square

Cost of white washing is 7.5 ₹ per metre square so we multiple by 7.5 to area so answer is 7.5×18 = 135₹

So cost is 135₹