Diagonal of a square is 40 cm. What will be the area of square?
2021
Diagonal of a square is 40 cm. What will be the area of square?
- A.
400√2 cm²
- B.
400 cm²
- C.
1600 cm²
- D.
800 cm²
Attempted by 54 students.
Show answer & explanation
Correct answer: D
Formula for area of a square using diagonal (d): Area = (d²) / 2
Given diagonal (d) = 40 cm
Square of diagonal (d²) = 40 * 40 = 1600 cm²
Area = 1600 / 2 = 800 cm²
Final Answer: Option 4 (800 cm²)