Tolong isiinNomor 3,6,dn 10 Pakai caranyaa!! Bsk dikumpulin

3. r = 7cm
D = 7×2=14
kll = πD
22/7×14 = 44cm
luas = πr²
22/7×7×7 =154cm²

5. r = 21cm
D = 21×2= 42cm
kll = πD
22/7×42= 132cm
luas = πr²
22/7×21×21=1386cm²

6. r = 25m
D = 25×2 = 50m
kll = πD
3,14×50 = 157m
luas = πr²
3,14×25×25 = 1962,5m²

10 r = 1,4m ➡ 14 dm
D = 2,8m ➡ 28 dm
kll = πD
22/7×28 = 88dm ➡ 8,8m
luas = πr²
22/7×14×14= 616 dm➡ 61,6m
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