Respuesta :
Answer:
840
Step-by-step explanation:
1st u have to multiple 280 by 3
					                   Circumference of circle C= π d 
C = π x 280
=879.65m
3 rounds = 3 x 879.65m
=2638.95 m
Hence the length of wire required is 2638.95 m
					                
					             C = π x 280
=879.65m
3 rounds = 3 x 879.65m
=2638.95 m
Hence the length of wire required is 2638.95 m
 
			                   
					                  