Dimensi Tiga
Kubus
r = 4 cm
N tengah CG
M tengah AE
Jarak M ke N
= MN
= AC
= r√2
= 4√2 cm
Jarak B ke N
= BN
= 1/2 r√5
= 1/2 × 4√5
= 2√5 cm
Jarak A ke N
= AN
= 3/2 r
= 3/2 × 4
= 6 cm
_____
Rumus cepat, didpt dr :
MN = AC
= √(AB² + BC²)
= √(r² + r²)
= √(2r²)
BN
= √(BC² + CN²)
= √(r² + (r/2)²)
= √((4r² + r²)/4)
= 1/2 √(5r²)
AN
= √(AB² + BC² + CN²)
= √(r² + r² + (r/2)²)
= √(2r² + r²/4)
= √(8r² + r²)/4
= 1/2 √(9r²)
= 1/2 × 3r
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Dimensi Tiga
Kubus
r = 4 cm
N tengah CG
M tengah AE
Jarak M ke N
= MN
= AC
= r√2
= 4√2 cm
Jarak B ke N
= BN
= 1/2 r√5
= 1/2 × 4√5
= 2√5 cm
Jarak A ke N
= AN
= 3/2 r
= 3/2 × 4
= 6 cm
_____
Rumus cepat, didpt dr :
MN = AC
= √(AB² + BC²)
= √(r² + r²)
= √(2r²)
= r√2
BN
= √(BC² + CN²)
= √(r² + (r/2)²)
= √((4r² + r²)/4)
= 1/2 √(5r²)
= 1/2 r√5
AN
= √(AB² + BC² + CN²)
= √(r² + r² + (r/2)²)
= √(2r² + r²/4)
= √(8r² + r²)/4
= 1/2 √(9r²)
= 1/2 × 3r
= 3/2 r