- A5 cm
- B20 cm
- C7.07 cm
- D10 cm
Step-by-Step Solution
In a square the diagonals are equal and bisect each other: BD = 10 cm, so OB = 5 cm.
Answer: A) 5 cm
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Rectangle, Rhombus and Square practice questions