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प्रथम चतुर्थांश में रेखा `3x+4y=12` द्वारा बने त्रिभुज द्वारा घिरा क्षेत्रफल ज्ञात करें?
A. 8
B. 12
C. 6
D. 4

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Correct Answer - C
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`3x+4y=12`
`(3x)/12+(4y)/12=1`
`:.` Divide by 12 on both sides make R.H.S`=1`
`x/4+y/3=1`
`:.` Co=ordinates of point `A=(0,3)`
point `B=(4,0)`
areas of `DeltaOAB=1/2xx4xx3`
`=6` sq. units

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