Tempat minuman berbentuk balok berukuran 15 cm × 20 cm × 21 cm. Hitunglah panjang masing masing diagonal sisinya!

diagonal sisi 1

√15²+20²
= √225+400
= √625
= 25

diagonal sisi 2

√15²+21²
= √225+441
= √666 cm

diagonal sisi 3

√20²+21²
= √400+441
= √841 cm

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#Semoga bermanfaat ^_^