an acre of land covered with water 1 inch deep,whats the weight of water?

Question

recent Q/A on tv today 28/6 man says 64,000 tons, cant work it out.if 1 pint is 1.25lbs...........?

Answer 1

one acre is 10 square chains

10 x 22 x 22 = 4840 square yards

39 x 39 square inches per sq yard = 7,361,640 cubic inches

16.39 grams per cubic inch. about 120 tonnes

Sorry about mixing imperial and metric but I'm of the age that learnt both.

Answer 2

An acre = 4840 yd^2

so volume of water = 4840*9(ft^2 )*144(in^2)*1(depth)=6272640 in^3. I'll convert to metric and back again because I can't remember the weight of 1 in^3 of water
6272640*2.54*2.54*2.54/1000kg = 10279.015kg = 10 1/4 tonnes which is pretty darned near the same in imperial, so say 10 tons

Answer 3

101 imperial tons


I'll do it in metric since I find it easier:

1 acre = 4047 m^2

1 inch = 0.0254m

So volume of water is

V = 4047 * 0.0254 m^3
= 102.794 m^3
= 102 794 liters

1 liter of water weighs 1 kg. So mass is

M = 102 794kg

in ton that's

101 imperial tons (113 short tons)

Answer 4

One acre is 43,560 square feet. Covered to the depth of 1 inch that is:

43,560/12 = 3630 cubic feet

The weight of water varies by temperature. It weighs:

Weight: 62.416 pounds per cubic foot at 32°F
Weight: 61.998 pounds per cubic foot at 100°F

http://ga.water.usgs.gov/edu/waterproperties.html

Let's select 62 pounds per cubic foot.

The weight of the water is:

(62 lbs/ft³) * (3,630 ft³) = 225,060 lbs = 112.53 tons

Answer 5

That's false. Blatantly so. At sea level, that much water, that much water (3,630 cubic feet) would weigh 113.080135 tons, approximately.

Answer 6

State the gravitational field strength. On somewhere like Jupiter, the water would weigh more.

Answer 7

64 tonnes

Answer 8

43560 ft² = 1 acre.

43560 x 0.083in/ft = 3615.5 ft³
3615.5 x 7.5 (US) gal/ft³ x 8.3 lbs/gal = 225,065 lbs.
225,065lbs ÷ 2,200 lbs/metric ton = 102 metric tons.
225,065lbs ÷ 2,000 lbs/short ton = 112.5 short (US) tons.

3615.5 x 6.24 (UK) gal/ft³ x 10 lbs/gal = 225,607 lbs
225,607 ÷ 2240 lbs/ton = 100.72 Imperial (UK) tons.

Answer 9

(1 acre)(43,560ft^2/1acre) (1in) (1ft/12in)
(62.43pounds/1ft^3) (1ton/2000pounds) = [ 113.31 tons ]

Answer 10

80 lbs