How could have written 5 and 4. But there are more answers.
Answer:
Hey There!
Let's solve...
Here it is a rectangular floor with length =21 cm and width =15cm
So

So now We need to convert it to yards square

So how this 9 ft^2 came??
Let's know

<h2>I hope it is helpful to you...</h2><h3>Cheers!_______</h3>
1 and 1/4..................................
B 16 miles an hour
Hope this helps