Diameter 40 cm
Luas permukaan bola?
Cari jari jari nya dlu.
R :
_
LP : 4πr²
LP : 4 × 3,14 × 20 × 20
LP : 4 × 3,14 × 400
LP : 12,56 × 400
LP : 5.024 cm².
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Diketahui :
Diameter 40 cm
Ditanya :
Luas permukaan bola?
Penyelesaian :
Cari jari jari nya dlu.
R :
R :
R :
_
LP : 4πr²
LP : 4 × 3,14 × 20 × 20
LP : 4 × 3,14 × 400
LP : 12,56 × 400
LP : 5.024 cm².