Pakai Cara ya pls pls​

Jawab:

1. 2 x π x r

= 2 x 22/7 x 14

= 44/7 x 14

= 616 : 7

= 88cm

2. π x d

= 3,14 x 20

=  62,8 cm

3. π x d

= 22/7 x 28

= 616 : 7

= 88cm

4. 2 x π x r

= 2 x 22/7 x 7

= 44/7 x 7

= 308 : 7

= 44cm

5. 2 x π x r

= 2 x 22/7 x 21

= 44/7 x 21

= 924 : 7

= 132cm

SEMOGA BERMAANFAAT^_^

maap klo salah