Question

If the length of the diagonal AC of a square ABCD is 8.4 cm, then find the area of the square?

1. 35.28 cm²  
2. 60.28 cm²
3. 50.49 cm²
4. 80.45 cm²
5. None of these

Answer 1

Correct Answer - Option 1 : 35.28 cm²  

Given:

If the length of the diagonal AC of a square ABCD is 8.4 cm

Calculation

Side of square = Diagonal/ √2

 Area = (Diagonal)²/ 2

Here, Diagonal = 8.4

Then Area = (8.4 × 8.4)/2

The Area = 70.56/2

The Area = 70.56/2

The Area = 35.28 cm²