Penjelasan dengan langkah-langkah:
Luas Kerucut :
L = ㅠ × r × ( r + s )
L = 3,14 × 20 × (20 + 20)
L = 3,14 × 20 × 40
L = 3,14 × 800
L = 2.512 cm2
Volume kerucut :
V = 1/3 × ㅠ × r × r × t
v = 1/3 × 3,14 × 20 × 20 × 20
v = 1/3 × 3,14 × 400 × 20
v = 1/3 × 3,14 × 8.000
v = 1/3 × 25.120
v = 8.373 cm2
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Verified answer
Penjelasan dengan langkah-langkah:
Nomor A :
Luas Kerucut :
L = ㅠ × r × ( r + s )
L = 3,14 × 20 × (20 + 20)
L = 3,14 × 20 × 40
L = 3,14 × 800
L = 2.512 cm2
Nomor B :
Volume kerucut :
V = 1/3 × ㅠ × r × r × t
v = 1/3 × 3,14 × 20 × 20 × 20
v = 1/3 × 3,14 × 400 × 20
v = 1/3 × 3,14 × 8.000
v = 1/3 × 25.120
v = 8.373 cm2