Question

2πr-2r=18 plz answer i am doing my homework​

Answer 1

Answer:

=2πr-2r=18

=2×(22/7)r-2r=18

=(44r-14r)/7=18

=30r=18×7

=30r=126

=r=126/30

=r=4.2

Answer 2

Hey dear

Here is your answer

Let r= x

2πr-2r=18

2×22/7×x - 2x= 18

44/7 x - 2x= 18

44x -14x/7 = 18

30x=126

x=126/30

x=4.2 cm

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