Penjelasan dengan langkah-langkah:
1) r= 15
d= r+r
d= 15+15=30
K= π×d
K= 3,14×30
K= 94,2
2) d=28
K= 22/7 × 28
K= 22×4
K= 88
3) r=10
d=10+10=20
K= 3,14×20
K= 62,8
4) d=24
K=π×d
K= 3,14×24
K= 75,36
5) r= 35
d= 35+35= 70
K= 22/7 × 70
K= 22 × 10
K= 220
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Verified answer
Penjelasan dengan langkah-langkah:
1) r= 15
d= r+r
d= 15+15=30
K= π×d
K= 3,14×30
K= 94,2
2) d=28
K= π×d
K= 22/7 × 28
K= 22×4
K= 88
3) r=10
d=10+10=20
K= π×d
K= 3,14×20
K= 62,8
4) d=24
K=π×d
K= 3,14×24
K= 75,36
5) r= 35
d= 35+35= 70
K= π×d
K= 22/7 × 70
K= 22 × 10
K= 220
semoga bisa membantu