Tolong njih mas/mbak
Jawaban:
20. 6.336 cm³
21. 462 cm²
Penjelasan dengan langkah-langkah:
20. p x l x t + s x s x s
= 32 x 12 x 12 + 12 x 12 x 12
= 4.608 + 1.728
= 6.336 cm³
21. 22/7 x r x r – ¼ x 22/7 x r x r
= 22/7 x 14 x 14 – ¼ x 22/7 x 14 x 14
= 22 x 2 x 14 – 11 x 14
= 616 – 154
= 462 cm²