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l = x
Panjang diagonal
= √p²+l²+t²
= √(2x)²+x²+2x²
= √4x²+x²+4x²
= √9x²
= 3x
Jadi panjang diagonal ruang pada balok adalah tiga kali lebarnya (C).
Semoga bermanfaat.
SELAMAT BELAJAR!! ^_^
dik: p = t = 2l
dit: d?
dij: d = √ p² + t²
d = √ l² + (2l)²
d = l +2l
d= 3l