100 Things Virginia Tech Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

100 Things Virginia Tech Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

Matematika panjng busur lingkaran yg diketahui sudut pusat nya 30° dan jari jari 21 adalah​

panjng busur lingkaran yg diketahui sudut pusat nya 30° dan jari jari 21 adalah​

Penjelasan dengan langkah-langkah:

Panjang busur.

30/360 × 2 × π × r

= 30/360 × 2 × ²²/7 × 21 cm

= 30/360 × 132 cm

= 3.960/360

= 11 cm

Penjelasan dengan langkah-langkah:

LINGKARAN

r = 21 cm

d = 42 cm

π = 22/7

sudut pusat = 30°

Panjang busur lingkaran

= sudut pusat × π × d

1 putaran

= 30° × 22 × 42

360° 7

= 1 × 22 × 42

12 7

= 22 × 6

12

= 132

12

= 11 cm ✔

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