PLEASE HURRY PLEASE PLEASE PLEASE 18 points

Which problem solving strategy would be best to solve this problem?
Jim and Lillian are painting a wall that is 15 ft wide and 9 feet tall. How much
paint will they need to buy?
A) work backwards
B) use a formula
C) make a table, chart or list
D) make a model or diagram

b

Step-by-step explanation:

make a formula, its the easiest way to solve problems like these also its very efficent

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.