Question

the dimensions of a room 9m ,16m, and 15m. find the cost of its four walls at the rate of 60 rs per square metre​

Answer 1

Answer:

Step-by-step explanation:

Given,

length=16

breadth=15

height=9

cost= (15 x 16 x 9)x 4

cost=2160 x 4

cost=8,640

Answer 2

Answer:

Rs.18000

Step-by-step explanation:

the length of the room (l) = 9m

breadth (b) = 16m

and height (h) = 15m

the surface area of four walls = 2(l+b)×h

= 2(9+16)×15

= 2×25×15

= 300m square

the cost of four walls at the rate of Rs.60 = 1 m square

so, the cost of 300 m square =300×60

= Rs. 18000