Question

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Question is the following
7. The internal measures of a cuboidal room are 12m x 8m x 4m. Find the total cost of
whitewashing all four walls of a room, if the cost of whitewashing is Rs.5/m2. What will be
the cost of whitewashing if the ceiling of the room is also whitewashed?

Answer 1

Answer:

dignity

‍ˈडिग्‌नटि्‌

noun

1.

calm, serious behaviour that makes other people respect you

शांत और गंभीर आचरण

to behave with dignityto behave with dignity

2.

the quality of being serious and formal

गरिमा, मर्यादा

the quiet dignity of the funeral servicethe quiet dignity of

Answer 2

Answer:

Rs 800, Rs 480

Step-by-step explanation:

Let length be 12m

The breadth be 8m

The height be 4m

Area of the 4 walls of the room= 2(l+b)*h= 2(12+8)*4= 160m^2

Cost of whitewashing = Rs. 5/m^2

Cost of whitewashing 4 walls = 160*5= Rs. 800

Area of the ceiling= 12*8=96m^2

Cost of whitewashing the ceiling alone:- 96*5= Rs.480

Total cost of whitewashing( walls + ceiling):- 800 +480= 1280 Rs.