The Taxi fare in Edmonton is $15 for the first kilometer and $10 per kilometer for subsequent distance covered. If the distance is represented as x, and the fare is represented as y, find the linear equation for this relationship.
^@ABCD^@ is a square with each side measuring ^@64 \space cm^@. ^@M^@ is a point on ^@CB^@ such that ^@CM = 16 \space cm^@. If ^@N^@ is a variable point on the diagonal ^@DB^@, find the least value of ^@CN + MN^@.
The chords AB and CD of a circle are perpendicular to each other. If radius of the circle is 7 cm and length of the arc BPC is 12 cm, find the length of arc AQD. (Assume π =