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3,14 x 9 x 9
254,34
no 8
3,14 x 20 x 20
1256
no 9
3,14 x 25 x 25
1962,5
= 3.14 × 9²
= 254.34 m²
2. L = Π × r²
= 3.14 × 20²
= 1256 m²
3. L = Π × r²
= 3.14 × 25²
= 1962.5 m²
Note :
Π = pi, menggunakan 22/7 atau 3.14 (bahasa matematika).
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