Question about Texas Instruments TI-15 Explorer Calculator

# Finding pi we would like to find pi time 3 how do I do that

Posted by Anonymous on

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Hi

look for the pi key it should be there or type

sin(180/1000000)*1000000 press enter or equal key to get 3.141592654 for a result it the same value as pj on the pi key times it by 3 to get
9.424777961 for a result.

hope this helps

Posted on Dec 12, 2014

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Posted on Jan 02, 2017

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## Related Questions:

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Almost exactly the way it's written in the book.

In the LineIO mode press
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In the MathIO mode press
SHIFT [xth-root] 3 right-arrow 5 0 0 0 * 3 / ( 4 * SHIFT [pi]) =

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Aren't you getting -.98279 (a negative value)?

The tangent function (and the cotangent) are periodic, with a period of pi. The calculator will give you a result from -pi/2 to pi/2, while the Hawkes apparently is giving you a result from 0 to pi. The difference between 2.1588 and -.98279 is pi.

To make the calculator's result match Hawkes, if the (co)tangent gives you a negative value, simply add pi to it.

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The surface area of the outer surface is the circumference of the outside of the pipe times its length. So, if OR is the radius of the outside of the pipe and SO is the outer surface area,
SO = 2 * pi * OR * 14
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The question states that the difference between the outside surface area and the inside surface area is 88 sq. cm:
SO - SI = 88 ; substituting:
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If volume of 176cc is of the air inside, the formula for this volume is 14 * pi * IR *IR
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If volume of 176cc is of the iron in the pipe, the formula for that volume is the difference between the volume of the outside of the pipe and the volume of the inside of the pipe, or
(14 * pi * OR * OR) - (14 * pi * IR * IR) = 176 ; factoring
(14 * pi) ((OR * OR) - (IR * IR)) = 176 ; dividing both sides by 14 * pi
((OR * OR) - (IR * IR)) = 176/(14 * 3.14159) = 4
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The volume of a tube is the area of the base times the height.
In your case you were given the diameter of the tube.
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I converted this to meters right away so that the units are the same.
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### Code PO153

Hi,

Switch off engine.
Check harness and connector condition and reliability, if a fault occurs then repair and go to step 6 of the test below.
If no fault is found then disconnect both upstream sensors and go to step 1 of the test below.

Test

• Check harness continuity PI 128/002 is correctly wired to PI 105/006. If this gives a positive result then go to step 2. If the circuit is open then find and repair the wiring fault, re-connect the harness and go to step 6.
• Check harness continuity PI 128/001 is correctly wired to PI 105/008. If this gives a positive result then go to step 3. If the circuit is open then find and repair the wiring fault, re-connect the harness and go to step 6.
• Check harness continuity PI 129/002 is correctly wired to PI 105/019. If this gives a positive result then go to step 4. If the circuit is open then find and repair the wiring fault, re-connect the harness and go to step 6.
• Check harness continuity PI 129/001 is correctly wired to PI 105/008. If this gives a positive result then go to step 5. If the circuit is open then find and repair the wiring fault, re-connect the harness and go to step 6.
• If the continuity checks are positive then replace and re-connect the sensors. If this now gives a positive result go to step 6.
• In order to check if the fault code has been cleared perform the service drive cycle. If this gives a positive result then stop. If the fault is still present then go to step 7.
• Repeat the diagnostic procedure. If this now omits a positive result then stop.
When testing do not test the resistance between sensor pins 3 and 4 as the generated current can damage the platinum electrodes.

Any further help, let me know.

Thanks for using Fixya.

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