Directions: Enter your answer as an integer or a decimal if there is a single answer box OR as a fraction if there are two separate boxes — one for the numerator and one for the denominator.
2. Find the radius of the circle x2+y2-4x+6y-51=0.
units
7. A square and an equilateral triangle have the same perimeter. If the diagonal of the square is 12*√2cm, then how many times √3 sq.cm. is the area of the triangle?
8. A circular park has radius 21 m. It has a road of width 7m running around it on the outside. Find the cost of painting the road at rate Rs 20 per square meter.