2000005501

SubArea: 
Polygons
Level: 
A
Project ID: 
2000005501
Accepted: 
0
Clonable: 
0
Easy: 
1
Derive the formula for the area of a square using the length of its diagonal \(u\).
\( \frac{u^2}{2}\)
\( 4u^2\)
\( \frac{u^2}{4}\)
\( 2u^2\)