Problem: Article: To determine the volume of a rectangular tank, multiply the length (l) times the width (w) times the height (h). The width is the horizontal distance from side to side. The length is the longest dimension, and the height is the vertical length from top to bottom. For rectangular tanks, the filled volume is simply the same length and width with a shorter height. The new height is the fill height, d. Therefore, filled volume is equal to the length times the width times the fill height.
Summary: Find the volume of your tank. Calculate the filled volume.

INPUT ARTICLE: Article: When you are presented with a list of numbers, you may be told that the list is an arithmetic sequence, or you may need to figure that out for yourself. The first step is the same in either case. Select the first two consecutive terms in the list. Subtract the first term from the second term. The result is the common difference of your sequence.  For example, suppose you have the list 1,4,7,10,13{\displaystyle 1,4,7,10,13}.... Subtract 4−1{\displaystyle 4-1} to find the common difference of 3. Suppose you have a list of terms that decreases, such as 25,21,17,13{\displaystyle 25,21,17,13}…. You still subtract the first term from the second to find the difference. In this case, that gives you 21−25=−4{\displaystyle 21-25=-4}. The negative result means that your list is decreasing as you read from left to right. You should always check that the sign of the difference matches the direction that the numbers seem to be going. Finding the common difference for just the first two terms does not ensure that your list is an arithmetic sequence. You need to make sure that the difference is consistent for the whole list. Check the difference by subtracting two different consecutive terms in the list. If the result is consistent for one or two other pairs of terms, then you probably have an arithmetic sequence.  Working with the same example, 1,4,7,10,13{\displaystyle 1,4,7,10,13}… choose the second and third terms of the list. Subtract 7−4{\displaystyle 7-4}, and you find that the difference is still 3. To confirm, check one more example and subtract 13−10{\displaystyle 13-10}, and you find that the difference is consistently 3. You can be pretty sure that you are working with an arithmetic sequence. It is possible for a list of numbers to appear to be an arithmetic sequence based on the first few terms, but then fail after that. For example, consider the list 1,2,3,6,9{\displaystyle 1,2,3,6,9}…. The difference between the first and second terms is 1, and the difference between the second and third terms is also 1. However, the difference between the third and fourth terms is 3. Because the difference is not common for the entire list, then this is not an arithmetic sequence. Finding the next term of an arithmetic sequence after you know the common difference is easy. Simply add the common difference to the last term of the list, and you will get the next number. For example, in the example of 1,4,7,10,13{\displaystyle 1,4,7,10,13}…, to find the next number in the list, add the common difference of 3 to the last given term. Adding 13+3{\displaystyle 13+3} results in 16, which is the next term. You can continue adding 3 to make your list as long as you like. For example, the list would be 1,4,7,10,13,16,19,22,25{\displaystyle 1,4,7,10,13,16,19,22,25}…. You can do this as long as you like.

SUMMARY: Find the common difference for the sequence. Check that the common difference is consistent. Add the common difference to the last given term.

In one sentence, describe what the following article is about: Non-Restricted firearms are ordinary rifles, shotguns, or combination guns that are not listed as prohibited (see step below for restricted firearms). The majority of civilian gun-owners in Canada have non-restricted firearms. To get this license, you'll need to take the Canadian Firearms Safety Course (CFSC). People can be licensed to acquire a restricted firearm for target practice, target shooting competitions, or as part of a collection. Individuals must be at least 18 years old to get a restricted firearms license. Individuals under 18 years of age can use restricted firearms if they are under the direct supervision of a licensed adult. To get this license, you'll need to take the Canadian Restricted Firearms Safety Course (CRFSC). Restricted guns include:  Most handguns Semi-automatic centre-fire rifles or shotguns with barrel lengths less than 470 mm (18.5 inches). Rifles or shotguns that can fire when their overall length is reduced by folding or telescoping to less than 660 mm (26 inches) Individuals are only allowed to own prohibited firearms if one was registered in their name when it became prohibited. Otherwise, no license will allow you to shoot with prohibited guns. Prohibited guns include:  Handguns that have a barrel less than 105 mm in length Handguns that are designed to discharge a 25 or 32 calibre cartridge (unless being used for sporting competitions) Firearms that are adapted from a rifle or shotgun, meaning they've been sawed, cut, or altered in any way. Automatic firearms
Summary:
Get a non-restricted firearms license. Get a restricted firearms license if you wish to own a restricted gun. Figure out if the guns you own (or wish to own) are prohibited.