A rectangular pool is 40 meters long and 30 feet wide. A walkway 3 feet

Question

wide surrounds the pool. What is area of the walkaway.
A 120 B 456 C 1191 D 1200

Answer 1

subtract the area of the pool from the total area:

(40+6)(30+6) - 40*30

Answer 2

1200

Answer 3

please explain its answer in a proper way