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Re: In the rectangular coordinate system, what is the area of [#permalink]
15 Feb 2014, 00:05

sanjoo wrote:

can we do this by distance formula..

square root (x2-x1)^2+(y2-y1)^2

I did that by this formula.. M geting 5, 5 and square root 50 respectively of three sides... so 5*5/2=12.5 Ans A.

is it rite? whats another aproach?

Yes you can do it with this formula... simplest and fastest approach. There are other approaches mentioned in the posts but those involve more steps. Like plotting a trapezium finding its area and then subtracting two 3-4-5 rt angled triangles to get the desired area.

"Appreciation is a wonderful thing. It makes what is excellent in others belong to us as well." ― Voltaire Press Kudos, if I have helped. Thanks! shit-happens-my-journey-to-172475.html#p1372807

Back to hometown after a short trip to New Delhi for my visa appointment. Whoever tells you that the toughest part gets over once you get an admit is...