Jawab:
4. B. 706,5 cm²
5. C. 2.967,3 cm²
Penjelasan dengan langkah-langkah:
4. Luas alas = πr²
= 3,14 x 15²
= 3,14 x 15 x 15
= 706,5 cm²
5. Luas permukaan tabung tanpa tutup
= (π x r²) + (2 π r x t)
= (3,14 x 15²) + (2 x 3,14 x 15 x 24)
= (3,14 x 15 x 15) + (2 x 3,14 x 15 x 24)
= 706,5 + 2.260,8
= 2.967,3 cm²
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Verified answer
Jawab:
4. B. 706,5 cm²
5. C. 2.967,3 cm²
Penjelasan dengan langkah-langkah:
4. Luas alas = πr²
= 3,14 x 15²
= 3,14 x 15 x 15
= 706,5 cm²
5. Luas permukaan tabung tanpa tutup
= (π x r²) + (2 π r x t)
= (3,14 x 15²) + (2 x 3,14 x 15 x 24)
= (3,14 x 15 x 15) + (2 x 3,14 x 15 x 24)
= 706,5 + 2.260,8
= 2.967,3 cm²