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May 21st, 2019, 08:45 PM   #11
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Quote:
 Originally Posted by skipjack That requirement is unclear. It doesn't tell you to round your answer or to truncate your answer. What exactly does "accurate to 1 d.p." mean?
We would be rounding. I'm assuming.

May 21st, 2019, 09:04 PM   #12
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Math Focus: Algebraic Geometry
Quote:
 Originally Posted by helpmeddddd why am I finding the length of r as I already know it?
Although in the specific case of $r^{2}= p^{2} + q^{2}$ you get $r$, what about:

$\displaystyle p^{2} = r^{2} - q^{2}$

or

$\displaystyle q^{2} = r^{2} - p^{2}$

Both of which are derived from the original equation.

Think of equations less as the value of one variable, but more as information for all of them.

Last edited by skipjack; May 22nd, 2019 at 01:11 AM.

May 22nd, 2019, 12:33 PM   #13
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Quote:
 Originally Posted by Greens Although in the specific case of $r^{2}= p^{2} + q^{2}$ you get $r$, what about: $\displaystyle p^{2} = r^{2} - q^{2}$ orn for all of them.
Using this I get $\displaystyle p^{2}=11.4^{2}-9.3^{2}$

$11.4^{2}$ = 129.96 -86.49=43.47 the sqaure root of 43.47 is 6.59317829275

so I'd guess you round it to p=6.6

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