Jawaban:
1. 276,32 cm²
2. 7 cm
Penjelasan dengan langkah-langkah:
1. mencari jari-jari tabung dulu :
Vol. tab = phi.r².t
352 = 22/7. r². 7
352 = 22r²
r². = 352/22
r². = 16
r. = √16
r. = 4
L.perm. tab = 2. phi. r (r + t)
= 2. 3,14. 4 (4 + 7)
= 2. 3,14. 4 (11)
= 276,32 cm²
2. Vol. tab = phi. r² . t
2198 = 3,14. 10. 10. t
2198 = 314t
t = 2198/314
t = 7 cm
Semoga membantu—!!
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Jawaban:
1. 276,32 cm²
2. 7 cm
Penjelasan dengan langkah-langkah:
1. mencari jari-jari tabung dulu :
Vol. tab = phi.r².t
352 = 22/7. r². 7
352 = 22r²
r². = 352/22
r². = 16
r. = √16
r. = 4
L.perm. tab = 2. phi. r (r + t)
= 2. 3,14. 4 (4 + 7)
= 2. 3,14. 4 (11)
= 276,32 cm²
2. Vol. tab = phi. r² . t
2198 = 3,14. 10. 10. t
2198 = 314t
t = 2198/314
t = 7 cm
Semoga membantu—!!