Jawaban:
Diketahui
Krucut
t = 15 cm
r = 8 cm
Jawab
a) Panjang garis pelukis ( s) = ?
s = √r² + t²
s = √8² + 15²
s = √ 64 + 225
s = √289
s = 17 cm
b) Luas Selimut
Ls = π x r x s
Ls = 3,14 x 8 x 17
Ls = 427,04 cm²
c) Luas permukaan Krucut
Lp = π x r x ( r + s)
Lp = 3,14 x 8 x ( 8 + 17)
Lp = 3,14 x 8 x 25
Lp = 3,14 x 200
Lp = 628 cm²
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Jawaban:
Diketahui
Krucut
t = 15 cm
r = 8 cm
Jawab
a) Panjang garis pelukis ( s) = ?
s = √r² + t²
s = √8² + 15²
s = √ 64 + 225
s = √289
s = 17 cm
b) Luas Selimut
Ls = π x r x s
Ls = 3,14 x 8 x 17
Ls = 427,04 cm²
c) Luas permukaan Krucut
Lp = π x r x ( r + s)
Lp = 3,14 x 8 x ( 8 + 17)
Lp = 3,14 x 8 x 25
Lp = 3,14 x 200
Lp = 628 cm²