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

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

Matematika #tolong bantu jwb soalnya besok dikumpul !!!​

#tolong bantu jwb soalnya besok dikumpul !!!​

Penjelasan dengan langkah-langkah:

r = 8 cm

d = 16 cm

AOB = 90° = ¼ lingkaran

π = 3,14

a. Keliling Lingkaran = π x d

= 3,14 x 16

= 50,24 cm

b. Panjang busur AB = Keliling/4

= 50,24/4

= 12,56 cm

c. Luas Lingkaran = π x r²

= 3,14 x 8²

= 25,12 x 8

= 200,96 cm²

d. Luas juring OAB = Luas Lingkaran/4

= 200,96/4

= 50,24 cm²

e. Luas ∆ OAB = 8²/2

= 64/2

= 32 cm²

f. Luas tembereng AB = 50,24 – 32

= 18,24 cm²

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