r = 3,5 cm
t = 12 cm
s = ?
--
s = √r² + t²
s = √3,5² + 12²
s = √12,25 + 144
s = √156,25
s = 12,5
LP = πr(s + r)
LP = 3,14 × 3,5 × (12,5 + 3,5)
LP = 3,14 × 3,5 × 16
LP = 10,99 × 16
LP = 175,84 cm²
Jawaban:
Kerucut
r= 3,5 cm
t= 12 cm
garis pelukis= s= √(3,5² + 12²)
s= √(12,25 + 144)
s= √156,25
s= 12,5 cm
Lp= π × r × (s +r)
Lp= 22/7 × 3,5 × (12,5 + 3,5)
Lp= 11 × 16
Lp= 176 cm²
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r = 3,5 cm
t = 12 cm
s = ?
--
s = √r² + t²
s = √3,5² + 12²
s = √12,25 + 144
s = √156,25
s = 12,5
--
LP = πr(s + r)
LP = 3,14 × 3,5 × (12,5 + 3,5)
LP = 3,14 × 3,5 × 16
LP = 10,99 × 16
LP = 175,84 cm²
Jawaban:
Kerucut
r= 3,5 cm
t= 12 cm
garis pelukis= s= √(3,5² + 12²)
s= √(12,25 + 144)
s= √156,25
s= 12,5 cm
Lp= π × r × (s +r)
Lp= 22/7 × 3,5 × (12,5 + 3,5)
Lp= 11 × 16
Lp= 176 cm²