of carpeting a square room at Rs. 250 per square meter is Rs. 81,000. If it costs Rs. 28,800 to plaster the four walls at the rate of Rs. 100 per square meter, what is the height of the room?

The deepest part of the swimming pool is 12 feet deep.the shallowest part of the pool is 3 feet deep.what is the ratio of the deeply of the deepest part of the pool to depth of the shallowest part of a pool?