The length of rectangle is increased by 60%. By what percent would the breadth to be decreased to maintain the same area
1). $37\frac{1}{2}$%
2). 60%
3). 75%
4). 120%
1. The circumference of a circle is 440 cm. The area of square inscribed in the circle is:
6. If the perimeter of a semi-circle is 144 cm, then find its radius (in cm).
7. The length of a diagonal in cm of a rectangle of length 9 cm and width 5 cm is
9. The area of the largest circle, that can be drawn inside a rectangle with sides 18 cm, by 14 cm is