1. Oblicz objętość kuli o promieniu r=3cm.
2. Oblicz pole powierzchni kuli o promieniu r=3cm.
2,
P = 4πr²
P = 4π3²=4π9 = 36π = 36 *3,14 = 113,04 [cm²]
1,
V=4/3πr³ = 4/3π3³ = 4/3π27 = 36π = 36 * 3,14 = 113,04[cm³]
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2,
P = 4πr²
P = 4π3²=4π9 = 36π = 36 *3,14 = 113,04 [cm²]
1,
V=4/3πr³ = 4/3π3³ = 4/3π27 = 36π = 36 * 3,14 = 113,04[cm³]