Find the volume(in cm3 ) of :
18500
19500
20000
20500
Volume = volume of prism + volume of pyramid
=30×30×15+(13×30×30×20)
=13500+6000
=19500cm3
The area of a circular playground is 22176 m2. Find the cost of fencing this ground at the rate of ₹ 50 per m.