Question

The dimensions lbh where. length is 12 metres , breadth is 7metres , height is 5metres . The cost of White washing inside the room excluding the floor at the rate of Rs 3per square meter​

Answer 1

12*7*5
: 420
cost: 3multiply420.
: 1260

Answer 2

ACC to the question

Length= 12 m

breadth= 7 m

Height= 5 m

so

white washing area = 2( l+b) h + l× b

2(12+7) 5 + 12×7

2(19)5 +84

190+84

274m^2

Rate of white washing = 274× 3

822rs answer