Please answer the word problem. Please show your step-by-step solution. Please answer it correctly, thank you tutor!

Engaging Scenario: You are the owner of a printing business and to support your preferred presidential candidate for the upcoming elections, you have pledged to join other businesses to donate whatever you can for the campaign. You decided to print pink posters with top and bottom margins of 6 cm and side margins of 4 cm. The area of the printed material on the poster (that is, the area between the margins) is fixed at 384 cm'. In order to print as many posters as you can, you have to find the dimensions of the poster with the smallest total area. This way, you will be able to save a significant amount in production cost and allot this for your other business needs. You are to present your computations to your accountant for counterchecking after which your graphic artist will work on the final design of the poster