101 Hikes in Southern California: Exploring Mountains, Seashore, and Desert

101 Hikes in Southern California: Exploring Mountains, Seashore, and Desert

Matematika berapa luas lingkaran dngn jari jari 28 cm​

berapa luas lingkaran dngn jari jari 28 cm​

Jawab:

2464cm[tex]2[/tex]

Penjelasan dengan langkah-langkah:

Luas lingkaran = Ο€ × r × r

r = jari-jari

Maka,

[tex]\pi \times r \times r \\ = \frac{22}{7} \times 28 \times 28 \\ \\ = \frac{22}{1} \times 4 \times 28 \\ \\ = 22 \times 4 \times 28 \\ = 2.464 \: cm^{2} [/tex]

Jadi luas lingkaran dengan jari jari 28cm adalah 2.464cm²

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