Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Mensuration Plane Figures
If the length of a diagonal of a square is (a + b), then the area of the square is:
1
\(\frac{1}{2}\left( {{{\rm{a}}^2} + {{\rm{b}}^2}} \right)\)
2
a2 + b2
3
\(\frac{1}{2}\left( {{{\rm{a}}^2} + {{\rm{b}}^2}} \right) + {\rm{ab}}\)
4
a2 + b2 + 2ab