Penjelasan dengan langkah-langkah:
a) luas permukaan
= 6 . sisi
=6 . 4√5
= 24√5 cm²
volume
= sisi . sisi . sisi
=4√5 . 4√5 . 4√5
= 64√125
=64√25 . 5
= 64 . 5√5
= 320√5 cm³
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Penjelasan dengan langkah-langkah:
a) luas permukaan
= 6 . sisi
=6 . 4√5
= 24√5 cm²
volume
= sisi . sisi . sisi
=4√5 . 4√5 . 4√5
= 64√125
=64√25 . 5
= 64 . 5√5
= 320√5 cm³