How do i work this problem?
A water bed filled with water has the dimensions 8.0ft x 7.0 ft x 0.75 ft. Taking the density of water to be 1.00g/cm(cubed). Determine the number of kilograms of water required to fill the bed.
How would I go about answering this question. I don't just want the answer, i'd like to know how to find it.
2006-09-16 06:22:41 · 4 answers · asked by Oh Shiznit 2 in Education & Reference ➔ Homework Help
1in = 2.54cm
8.0ft = 96in = 240cm
7.0ft = 84in = 210cm
0.75ft = 9in = 23cm
240cm x 210cm x 23cm = 1.2 x 10^6cm(cubed)
1.00g/cm(cubed) x 1.2 x10^6cm(cubed)
= 1.2 x 10^6g
1kg = 10^3g
1.2 x 10^6g = 1.2 x 10^3kg
2006-09-16 06:25:53 · answer #1 · answered by Steve-Ohhhh 2 · 0⤊ 0⤋
You are given the dimensions of the bed in feet. First, you have to convert feet to cm (will be big numbers). Then you have to calculate the volume of the bed. Use the calculated volume and the given density (Density=mass divided by volume) to calculate the mass of the water. Given the units you have, this answer will be in grams of water....divide this answer by 1000 to convert it to kilograms.
2006-09-16 13:28:04 · answer #2 · answered by Mr. G 6 · 0⤊ 0⤋
you have to convert ft to cm, and find the volume of the bed in cm. then you multiply it by 1 g/cm for the number of grams. then you divide the answer by 1000 for kg.
2006-09-16 13:26:46 · answer #3 · answered by ajflkajfsalkfsalkfna 3 · 0⤊ 0⤋
change the feet to cm by multiplying each value by 30.48. then figure the number of cubic cm required this is the same as the number of g required. then convert from g to kg by dividing by 1000.
2006-09-16 13:36:48 · answer #4 · answered by crime.dog738 5 · 0⤊ 0⤋