Question 11
Trava is lost in a 6×6 forest containing two old trees and one rock, as shown.
Distance is the minimum number of horizontal/vertical cell-to-cell moves. For example, the rock is distance 4 from the nearer tree. Trava can see an object only if its distance is at most 4. Trava's distances from the two trees are 4 and 2, and the rock is not visible. How many cells could contain Trava?
Distance is the minimum number of horizontal/vertical cell-to-cell moves. For example, the rock is distance 4 from the nearer tree. Trava can see an object only if its distance is at most 4. Trava's distances from the two trees are 4 and 2, and the rock is not visible. How many cells could contain Trava?