Esther starts at one corner of a square field and walks 90 feet along one side to another corner of the field. She turns 90° and walks 70 feet, and then walks straight back to where she started.

What is the area of the part of the field she walked around?

A.
3150 ft²

B.
4900 ft²

C.
6300 ft²

D.
8100 ft²

Question

Esther starts at one corner of a square field and walks 90 feet along one side to another corner of the field. She turns 90° and walks 70 feet, and then walks straight back to where she started. 
 
What is the area of the part of the field she walked around?
 
 A.
3150 ft²
 
 B.
4900 ft²
 
 C.
6300 ft²
 
 D.
8100 ft²

doc.brown · Answer

If you wanted the area of the rectangle it would be $90ft\times 70ft$
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Which would be $6300ft^2$, but that's not what you want.

doc.brown · Answer

Remember $6300ft^2$ is 6300 1ft x 1ft squares
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