Jawaban:
B. 2.640
Penjelasan dengan langkah-langkah:
L prmukaan bangun
= L selimut kerucut
= πrs
= 22/7 x 21 cm x 40 cm
= 2.640 cm²
L = π × r × s
L = 22/7 × 21 × 40
L = ( 22 × 21 × 40 )/7
L = 462 × 40/7
L = 18.480/7
L = 2.640 Cm² ( Opsi B)
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Jawaban:
B. 2.640
Penjelasan dengan langkah-langkah:
L prmukaan bangun
= L selimut kerucut
= πrs
= 22/7 x 21 cm x 40 cm
= 2.640 cm²
Jawaban:
L = π × r × s
L = 22/7 × 21 × 40
L = ( 22 × 21 × 40 )/7
L = 462 × 40/7
L = 18.480/7
L = 2.640 Cm² ( Opsi B)