berapa cm² luas bangun tersebut?
Penjelasan dengan langkah-langkah:
L = 3/4πr²
L = 3/4. 3,14 × 30²
L = 3/4. 314 × 3²
L = 3/4. 314. 9
L = 3/4. 2826
L = 8478/4
L = 2.119,5 cm²
[tex]luas \: \frac{3}{4} \: lingkaran \: \: = \pi \times r \times r \: \times \frac{1}{4} [/tex]
Maka,
[tex]3.14 \times 30 \times 30 \times \frac{3}{4} \\ \\ = 3.14 \times 900 \times \frac{3}{4} \\ \\ =2.826 \times \frac{3}{4} \\ \\ = 2.119.5cm^{2} [/tex]
Semoga membantu
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