Solve the Problem, If Possible $15 \mathrm{ft}$ By $18 \mathrm{ft}$ She Wants to Put Grass in a Strip of Nearest

Solve the problem, if possible. Round your answer to the nearest tenth, when appropriate.
-Doris has a fish pond $15 \mathrm{ft}$ by $18 \mathrm{ft}$ . She wants to put grass in a strip of uniform width around the pond. She has enough grass seed for $234 \mathrm{ft}^{2}$ . How wide will the strip be?

A) $12 \mathrm{ft}$
B) $1.5 \mathrm{ft}$
C) $9 \mathrm{ft}$
D) $3 \mathrm{ft}$