For a pyramid with a regular base, another equation may be used as well: Pyramid = ( n / 12 ) h s 2 cot ( π / n ) (n/12) h s^2 \cot(\pi/n) ( n /12 ) h s 2 cot ( π / n ), where n n n is a number of sides s s s of the base for a regular polygon. Pyramid = ( 1 / 3 ) A h (1/3)Ah ( 1/3 ) A h where A A A is a base area and h h h is the height. Rectangular solid (volume of a box) = l w h lwh lw h, where l l l is the length, w w w is the width and h h h is the height (a simple pool may serve as an example of such shape). Sphere = ( 4 / 3 ) π r 3 (4/3)\pi r^3 ( 4/3 ) π r 3, where r r r is the radius.Ĭylinder = π r 2 h \pi r^2h π r 2 h, where r r r is the radius and h h h is the height.Ĭone = ( 1 / 3 ) π r 2 h (1/3)\pi r^2h ( 1/3 ) π r 2 h, where r r r is the radius and h h h is the height. Here are the formulas for some of the most common shapes:Ĭube = s 3 s^3 s 3, where s s s is the length of the side. Should be the mark next behind the 1/2 inch mark as 1/2 is 4/8.There is no simple answer to this question, as it depends on the shape of the object in question. If you have a 12 inch ruler cut the ruler in half or any dollar bill is exactly 6 inches. ![]() Start with a ruler that is graduated in 10th of an inch (or finer). Look at a ruler or tape measure and between 0 and 1 you will see several marks these are called GRADUATION.ġ. How Do I Measure One And Seven Eighth On A Ruler? Your typical ruler has inches that are divided into eight sections. All you have to do is to locate 4.5 inches which is a simple. The inches are divided into halves, fourths.ĭoes not matter dear it happens some times. ![]() What this means is that 1/3 of an inch is located approximately between 2/8 and 3/8.Īsk A Question About How To Read Ruler Measurements?Ī ruler is generally 12 inches long or one foot in length. The sum is the same as the one we used for the 1/16 ruler, only this time, we divide 8 by 3. It's not totally accurate, but will serve the purpose for most tasks. That gives you the answer of 5.33, which is roughly halfway between 5/16 and 6/16. Take the total increments, which in this case is 16, and divide by three. On a ruler that has markings in increments of 1/16, you'll find 1/3 of an inch roughly between the markings of 5/16 and 6/16. I'll provide details of how to measure a 1/3 of an inch on rulers that measure in 1/16 gaps, and also rulers that measure in 1/8 gaps. ![]() You may be able to buy specially designed rulers to help you with this problem, but unless you're needing your measurement to be extremely accurate, there is a way to measure 1/2 of an inch on a ruler. The difficulty with measuring 1/3 on a ruler or tape measure is that it isn't a even number, and therefore, it's simply not listed or marked. Therefore, you can use a ruler to easily mark a variety of inch divisions, including 1/4, 1/2, 1/8 and 1/16 (and loads more). For example, you are usually able to see a marking for each 1/16 or 1/8 of an inch. Standard rulers and tape measures divide inches by even measurements. Why can't you measure 1/3 of an inch easily on a ruler? Before we get to that, though, let's have a quick look at why it's so difficult to do. Truth be told, it's really difficult to measure 1/3 of an inch on a ruler precisely, but there is a way to do it relatively accurately.
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