Dimensi Tiga
Kubus
r = 8 cm
AH = diagonal bidang = r√2
∆ABH siku di A
luas ∆ABH
= 1/2 × AB × AH
= 1/2 × 8 × 8√2
= 32√2 cm²
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Dimensi Tiga
Kubus
r = 8 cm
AH = diagonal bidang = r√2
∆ABH siku di A
luas ∆ABH
= 1/2 × AB × AH
= 1/2 × 8 × 8√2
= 32√2 cm²