A quadratic equation is very important for a student who studies in 10th std or competitive exam. I learned one. I've searched before and not so many people know about it, so I'm helping you guys now....
AREA OF THE CIRCLE The area of a circle is the total space inside the circle. If radius of the circle = r Then, Area of the circle = πr2 sqare units Here, π=22/7=3.14 aproximately Ex:- radius...