Given a(1,7) b(8,4) and c(3,10) which coordinates will make line AB parallel to line CD

step-by-step explanation:

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

well, if it's triangular garden, the triangle could represent the garden.