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प्रश्न
Find the distance between the following pairs of point.
W `((- 7)/2 , 4)`, X (11, 4)
उत्तर
Let the co-ordinates of point W are (x1, y1) and of point X are (x2, y2)
`((-7)/2,4)` = (x1, y1)
(11, 4) = (x2, y2)
d (W, X) = `sqrt((x_2-x_1)^2+(y_2-y_1)^2)`
= `sqrt((11-(-7/2))^2+(4-4)^2`
= `sqrt((11+7/2)^2+0)`
= `(11 + 7/2)`
= `11/1+7/2`
= `(22+7)/2`
= `29/2`
= 14.5
∴ Distance between points W and X is 14.5.
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