Answers

2016-03-23T12:06:50+05:30
Area left for audience = total area - area for the performance 
= 3.14 x 50 x 50 - 3.14 x 20 x 20
=7875 - 1256 = 6169 m²
0
2016-03-23T12:19:41+05:30
Radius= 50m
for the performance by an artists is 20m in radius 
therefore
               Area left for audience = total area - area for the performance 
               = 3.14 x 50 x 50 - 3.14 x 20 x 20
               =7875 - 1256 = 6169 m²
0