Lama ga ngequiz :v

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QUIZ !

Soal? Ada di gambar ! :
Klo tulisan ku ga jelas :

Tentukan keliling lingkaran berikut !

a. Jika diketahui r = 24 cm
b. Jika diketahui d = 28

#Good luck !.

Lama ga ngequiz :v

Lama ga ngequiz :v

a. K = 2 × π × r

= 2 × 3,14 × 24

= 6,28 × 24

= 150,72 cm

–

b. K = π × d

= frac{22}{7} × 28

= frac{22}{cancel{7}} × cancel{28}

= 22 × 4

=88

atau

r = d ÷ 2

= 28 ÷ 2

= 14 cm

K = 2 × π × r

= 2 × frac{22}{7} × 14

= 2 × frac{22}{cancel{7}} × cancel{14}

= 2 × 22 × 14

= 44 × 2

= 88 cm