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With the radius of 3.5 inches and the height of 15 inches what is the square inches

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It sounds like you are trying to determine the surface area of a cylinder.

The area of the top and the bottom of the cylinder (which are circles) are pi x r ^ 2. Since there are two of them, we have to multiply this answer by 2.

The surface area of the side is going to be the circumference of the circle times the height. The circumference is 2 x pi x r and the height is 15 inches.

To get the total surface area, we have to add these amounts together.

Good luck,

Paul

Posted on May 23, 2017

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I have no idea about your knowledge of calculus. But the solution requires calculus (I am in no mood to introduce a Delta V and Delta t and let Delta t approach zero.)
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SOURCE: How many square inches in 31 1/8 x 15 3/4 inches

31.125 multiplied by 15.75 = 490.21875 square inches.
.21875 is the same as 7/32

So, final answer: 490 7/32" squared.

Posted on Apr 07, 2015

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2negative 3 plus 3negative 3


Just want to make sure that we are on the same page.

2^(-3) + 3^(-3)

2 to the exponent -3 + 3 to the exponent -3

Because of BEDMAS, we have to do the exponent calculations first and then do the addition between the two terms last.

The rule of negative exponents is you put 1 over the base to the same exponent, but change the exponent from negative to positive.

=1/(2^3) + 1/(3^3)

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To add or subtract numbers, we need a common denominator.

Let's factor 8 and 27 to get the lowest common multiple.

8 - 1 2 4 8
27 - 1 3 9 27

Nothing in common to eliminate, so we have to use 8 x 27 or 216.

27/216 + 8/216 = 35/216

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Paul

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