Friday

January 30, 2015

January 30, 2015

Posted by **Bri** on Sunday, March 17, 2013 at 4:43pm.

The cost of gas is $4.29 per gallon. How much will itcost to fill the tank? Use the conversion 1 gallon=231 in cubed.

They showed a pic. of a tank with length=1.75ft

width=1.25 ft

height=11 in

I did v=bh

v=lwh v=1.75(1.25)11 v=24.0625 ft cubed

12 in=1ft

24.0625(12)=288.75 in cubed

288.75 in cubed/213 in cubed= 1.25 gallons

now I am cunfused

80% of 1.25= gallons left to fill tank

.80(125)= 1 gallon left to fill tank

1 gallon =$4.29 It will cost$4.29 to fill the tank

PLEASE HELP, did I do this correctly.

- Math- PLEASE HELP -
**Steve**, Sunday, March 17, 2013 at 5:31pmyou cannot convert ft^3 to in^3 by multiplying by 12.

1 ft = 12 in, so

1 ft^3 = (12 in)^3 = 1728 in^3

24.0625 * 1728 = 415890 in^3 = 180 gal

That's some tank!

Ahh! You also did the volume wrong. You need to measure everything in either feet or inches, and you mixed them together.

Let's start over. The volume of the tank in in^3 is

21*15*11 = 3465 in^3 = 15 gals.

Now you should be able to make things come out right.

- Math- PLEASE HELP -
**Bri**, Sunday, March 17, 2013 at 7:24pmOk I corrected my mistake and got that it would cost $51.48, because it was 15 gallons she needed to get.

Is this correct now? Thank you

- Math- PLEASE HELP -
**Steve**, Monday, March 18, 2013 at 9:52amLooks good to me.

**Answer this Question**

**Related Questions**

Math - It took 6.5 gallons of gas to fill the tank of the family car. If the ...

math - Ron's car has a 12-gallon gas tank. If gas costs $1.45 per a gallon, how ...

algebra - while driving a car you realize that you only have one eighth gas ...

math - Help me solve this!! Joeys father stops at the gas station to buy gas. ...

Math - Daniel Filled the gas tank in his car with 14.6 gallons of gas. He then ...

math - Mike fills his car's tank up with 20 gallons of regular gas at $2.09 per ...

Math - The gas tank of a car holds 20 gallons of gas. A gallon of gas costs $1....

math - . Darya's car averages 36 miles per gallon. How many gallons of gas will ...

math - the jenkins started their trip with a full tank of gas and 48,961 miles ...

Math - The price of gas is 85.9 cents per Litre. If Brenda needs 48.3 L of gas ...