Using the pythagorean theorem for each leg to the trip will give you the distances for each leg
d=√(dy^2+dx^2) so in order...
d1=√(9+1)=√10
d2=√(4+64)=√64
d3=√(49+1)=√50
d4=√(36+64)=√100 (note I combined the the grocery to bakery to home into one straight line)
so for c)
d=√10+√64+√50+√100 blocks
d≈28.23 blocks (to nearest one-hundredth of a block)
d)
If each block is 1/8 mile then the distance in miles for all of her errands is:
(0.125)28.23≈3.53 miles