calculation heat rejection to engine coolling water and kep getting wong results someone pls enlighten me..thx

Question

(0.7)(PI/4)(0.015)(0.015)(3600)(1000)times the Sq root of (2x9.81)(0.120)(13560/1000)

Answer 1

You need to give some kind of description of the problem. A stream of numbers isn't helpful. Unless you just want the answer to the string of numbers, in which case there are three possible answers, since it is unclear what you're taking the square root of. Here is how I read your string (which doesn't all show in your question because of how Yahoo truncates unspaced strings):
(.7) * (PI / 4) * (.015) * (.015) * (3600) * (1000) * Sq root of (2 * 9.81) * (.12) * (13560 / 1000)
If your "Sq root of" applies to the entire string of numbers following ((2 * 9.81) * (.12) * (13560 / 1000)), the answer is 2516.19.
If it applies to "(2x9.81)" the answer is 3209.69.
And if it only applies to "2" the answer is 10053.05.

Answer 2

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