Dustin always takes the same route when he walks his dog. first, he walks 6 blocks to the park. then he walks 4 blocks to the elementary school. finally, he walks 7 blocks to get back home. dustin walks his dog 3 times each day. how many blocks does dustin's dog walk each day?

51

Step-by-step explanation:

add them altogether then times by 3

Mai travels in a circle with radius = 3 meters.
the circumference of the circle is  (6 pi) meters.

anju travels in a circle with radius = 2 meters.
the circumference of the circle is  (4 pi) meters.

after one rotation of the carousel, both girls have traveled
one circumference of their circles.

mei has traveled (6 pi  -  4 pi) meters farther than anju.

              6 pi - 4 pi  =  2 pi meters farther .

(that's about  6.283 meters  farther.)