Bantu dong pake cara yaa​

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Bantu dong pake cara yaa​

Bantu dong pake cara yaa​

Jawab:

Keliling lingkaran = 2πr

a. r = 14cm

K = 2 ( frac{22}{7} ) 14

  = 88 cm²

b. 30cm

K = 2(3,14) 30

   = 188.4 cm²

c. 40cm

K = 2(3,14)40

  = 251.2 cm²

d. 42 cm

K = 2 ( frac{22}{7} ) 42

 = 264 cm²

e. 100 cm

K = 2(3,14)100

  = 628 cm²

Jawab:

a.K=2×22/7×14

K=2×22×=88

b.K=2×3.14×30

K=188.4

c.K=2×3.14×40

K=251.2

d.K=2×22/7×42

K=2×22×6

K=264

e.K=2×3.14×100

K=628

Penjelasan dengan langkah-langkah:

K=2πr