___________________________________________
K Lingkaran = π × d
K Lingkaran = 3,14 × 43
K Lingkaran = 135,02 cm
Atau
K Lingkaran = 22/7 × 43
K Lingkaran = 135,14 cm
___________________________________________ L Lingkaran = ¼ × π × d
L Lingkaran = ¼ × 3,14 × 43
L Lingkaran = ¼ × 135,02
L Lingkaran = 33,755 cm²
L Lingkaran = ¼ × π × d
L Lingkaran = ¼ × 22/7 × 43
L Lingkaran = ¼ × 135,14
L Lingkaran = 33,785 cm²
D = 43 cm
.
Cara 1
K = π x d
K = 3,14 x 43 cm
K = 135,02 cm
- - - - -
atau,
Cara 2
K = 2 x π x ( 43 cm ÷ 2 )
K = 2 x 3,14 x 21,5 cm
K = 2 x 67,51 cm
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SOAL 1
___________________________________________
K Lingkaran = π × d
K Lingkaran = 3,14 × 43
K Lingkaran = 135,02 cm
Atau
K Lingkaran = π × d
K Lingkaran = 22/7 × 43
K Lingkaran = 135,14 cm
___________________________________________ L Lingkaran = ¼ × π × d
L Lingkaran = ¼ × 3,14 × 43
L Lingkaran = ¼ × 135,02
L Lingkaran = 33,755 cm²
Atau
L Lingkaran = ¼ × π × d
L Lingkaran = ¼ × 22/7 × 43
L Lingkaran = ¼ × 135,14
L Lingkaran = 33,785 cm²
___________________________________________
Diketahui :
D = 43 cm
.
Ditanya :
.
Dijawab :
Cara 1
K = π x d
K = 3,14 x 43 cm
K = 135,02 cm
- - - - -
atau,
Cara 2
K = 2 x π x ( 43 cm ÷ 2 )
K = 2 x 3,14 x 21,5 cm
K = 2 x 67,51 cm
K = 135,02 cm