Answer:If the letters are 2 inches high in the sketch, and you want them to be 2 feet high in reality, that means you need to scale up the letters by a factor of 12 (since 1 foot = 12 inches).
So the new height of each letter will be:
2 inches/letter × 12 = 24 inches/letter
And the new length of the banner will be:
20 inches/banner × 12 = 240 inches/banner
To find out how much paper to buy, you need to know the width of the paper you'll be using. Let's say the paper is 36 inches wide (3 feet). In that case, you'll need to buy:
240 inches/banner ÷ 36 inches/roll = 6.67 rolls of paper
Since you can't buy a fraction of a roll of paper, you should round up to 7 rolls of paper to ensure you have enough.
Explanation: