Odpowiedź :
32 x 3,14= oblicz
62 : 2 =31
31 x 3,14=oblicz
51 : 2 =25,5
25,5 x 3,14= oblicz
niemam kalkulatora na kompie
1.
promień 3 promień 2/3 promień 1
P = r²π P = r²π P = r²π
P = 3²π P = (2/3)² π P = 1²π
P = 9π P = 4/9π P = 1π
2.
średnica 6 średnica 2,5 średnica 1
promień 3 promień 1,25 promień 0,5
P = r²π P = r²π P = r²π
P = 3²π P = (1,25)²π P = 0,5²π
P = 9π P = 0,25π
promień 3 promień 2/3 promień 1
P = r²π P = r²π P = r²π
P = 3²π P = (2/3)² π P = 1²π
P = 9π P = 4/9π P = 1π
2.
średnica 6 średnica 2,5 średnica 1
promień 3 promień 1,25 promień 0,5
P = r²π P = r²π P = r²π
P = 3²π P = (1,25)²π P = 0,5²π
P = 9π P = 0,25π