How many centimeters are in 20 miles

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?