21*21 = 441 square feet.
21*21 = 441 square feet.
21*21 = 441 square feet.
21*21 = 441 square feet.
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21*3 = 63 square feet.
7 × 3 = 21 square feet
It is 2.1875 square feet.
To find the area of a rectangle, you multiply its length by its width. In this case, 21 feet multiplied by 14 feet equals 294 square feet. So, a 21'x14' rectangle has an area of 294 square feet.
Oh, dude, you're hitting me with the math questions now? Alright, so if you have a room that's 18 feet by 21 feet, you just gotta multiply those two numbers together. That gives you 378 square feet. So, like, if you're planning on redecorating or something, now you know how much paint you need.