Answer:
1070 cm.
Step-by-step explanation:
Its correct for Khan Academy:)
Answer:
0.2121~
Step-by-step explanation:
It's a repeating number. 0.0212121212
Answer:
B
Step-by-step explanation:
I'm not really sure tho
Answer:

Step-by-step explanation:
Answer:
35.4259791678 (or 35.426)
Step-by-step explanation:
Area is length x width. Since this is a square the length and the width are the same. So you would need to find the square root of 1255. (In simpler words, what times what is 1255?)