Find the perpendicular distance of the point `(-1,3,9)` from the line `(x-13)/5=(y+8)/(-8)=(z-31)/1`

Find the distance of the point (1,-1,-10) from the line (x-4)/1=(y+3)/(-4)=(z+1)/7 measured parallelto the line (x+2)/2=(y-3)/(-3)=(z-4)/8

Find the perpendicular distances of the point (2,1) from the parallel lines 3x-4y+4 = 0 and 4y-3x+5 = 0. Hence find the distance between them.