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Mathematics 11 Online
OpenStudy (anonymous):

If AD = 10 cm and AC = 25.6 cm, calculate the length of AB.

OpenStudy (aravindg):

Is it a right angled triangle ? Can you provide a figure ?

OpenStudy (anonymous):

It wont let me copy the figure,.

OpenStudy (aravindg):

why not ? Is it some kind of test ?

OpenStudy (anonymous):

One sec, Im gonna try to upload it. And no, my computers just being really slow lol

OpenStudy (aravindg):

:P

OpenStudy (anonymous):

OpenStudy (anonymous):

Anybody know the answer?

OpenStudy (aravindg):

ya I think there is a formula for this

OpenStudy (anonymous):

Do you know the formula?

OpenStudy (aravindg):

I studied it 3 years before ..Almost forgot ..Let me think...

OpenStudy (anonymous):

ok, thanks !

OpenStudy (aravindg):

got it !! \[\huge \boxed{AB^2=AC \times AD}\]

OpenStudy (aravindg):

^_^

OpenStudy (anonymous):

so how do i use that lol I'm horruble at this..

OpenStudy (anonymous):

*horrible

OpenStudy (aravindg):

well simply substitute !! You are given AC and AD . MulTIPLY them .then take square root

OpenStudy (aravindg):

you will get AB :)

OpenStudy (anonymous):

I'm stuck at AB2=256... lol

OpenStudy (aravindg):

lol take square root ?

OpenStudy (aravindg):

its a perfect square :)

OpenStudy (aravindg):

AB X AB =256 .. think !! else use a calculator

OpenStudy (anonymous):

how do i square root it? I dont have a scientific calculator just the one on my phone

OpenStudy (aravindg):

just simply think of perfect squares if u dont have scientific calculator

OpenStudy (anonymous):

ok thank you (:

OpenStudy (aravindg):

;) yw ..can I knw what answer you got ?

OpenStudy (anonymous):

I havent got it yet, I'm gonna wait til I find my calculator. lol

OpenStudy (aravindg):

here is mine http://web2.0calc.com/

OpenStudy (anonymous):

I have a whole other assignment I have to do for my online class so I'm in a rush lol

OpenStudy (aravindg):

oops :P

OpenStudy (anonymous):

Oh, actually that will probably come in handy ! (:

OpenStudy (aravindg):

great :D

OpenStudy (aravindg):

I am happy to lend my calculator :)

OpenStudy (anonymous):

lol thanks for the help !

OpenStudy (aravindg):

yw :)

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