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132 = π x d
132 = 22/7d
22d = 132 x 7
d = 924 ÷ 22
d = 42 Cm
r = 21 Cm
Garis Lukis
s² = r² + t²
s² = 21² + 17²
s² = 441 + 289
s² = 730
s = √730
s = 27
Luas selimut Kerucut
= π x s x r
= 22/7 x 27 x 21
= 1.782 Cm²
Luas Sisi Kerucut
= Luas Selimut + Luas Alas
= 1.782 + π x r²
= 1.782 + 22/7 x 441
= 1.782 + 1.386
= 3.168 Cm²
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