Gilbert wants to build a triangular flower garden by the front porch of his house. The garden will be 6 feet long near the front of the house and 4 feet long next to the walkway. What will be closest to the length, in feet, of the longest edge of his garden?

A. 2

B. 4.5

C. 7.2

D. 10

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.

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

is there more info provided? there is not enough information given in the problem