How should i set this up to get my answer

Write it down into the 'Ask your question' tool.

Step-by-step explanation:

Under the "What do you need to know?" click/tap the 'Ask your question' button, it will open up a box, and you should write as follows:

1. How many square yards of carpet will be needed for a 12 ft by 9 ft room?

2. How many square yards of carpet will be needed for a 21 ft by 15 ft room?

Good luck!