Jawaban:
lp tabung = 2 x phi x r x (t+r)
= 2 x 22/7 x 7 x (20 + 7)
=44 x 27
=1.188 cm²
lp bola = 4 x phi x r x r
= 4 x 22/7 x 7 x 7
= 88 × 7 = 616 cm²
lp = 616 cm² + 1.188cm²
= 1.804cm²
maaf kalau salah
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Jawaban:
lp tabung = 2 x phi x r x (t+r)
= 2 x 22/7 x 7 x (20 + 7)
=44 x 27
=1.188 cm²
lp bola = 4 x phi x r x r
= 4 x 22/7 x 7 x 7
= 88 × 7 = 616 cm²
lp = 616 cm² + 1.188cm²
= 1.804cm²
maaf kalau salah