sebuah tabung memiliki tinggi 10 cm dan diameternya 20 cm tentukan volume dan luas permukaan tabung
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PENJELASAN
r = d/2
= 20/2
= 10 cm
Volume tabung :
V = πr^2h
= π x 10^2 x 10
= 3.14 x 100 x 10
= 3140 cm^3
Luas permukaan tabung :
L = 2πr^2 + 2πrh
= 2 x 3.14 x 10^2 + 2 x 3.14 x 10 x 10
= 628 + 628
= 1256 cm^2
Jawaban:
v=3140
LP=314
Penjelasan dengan langkah-langkah:
v=3,14x10x10x10=3140cm³
Lp=3,14x10x10=314cm³