Question

Water weighs 62.4 pounds per cubic foot. How much does the water in a tank that measures 7 ft × 4 ft × 9 in, weigh? A. 1,316 lbsB. 1,310 lbsC. 1,574 lbsD. 1,573 lbs

Answer 1

`9in\cdot(1ft)/(12in)=0.75ft`
`Vt=0.75ft\cdot7ft\cdot4ft`
`Vt=21ft^3`
`Ww=21ft^3\cdot62.4pounds`
`Ww=1310.4\text{ lbs}\cong1310\text{ lbs}`