LP :
= 2πr²
= 2(3,14(20²)
= 2(3,14(400)
= 2(1.256)
= 2.512 CM²
LP 1/4 BOLA :
= 3/2πr²
= 3/2(3,14(20²)
= 3/2(1.256)
= 3(628)
= 1.884 CM²
V :
= 2/3πr²
= 2/3(3,14(20²)
= 2/3(1.256)
= 2.512/3
= 837,34 CM³
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Verified answer
LP :
= 2πr²
= 2(3,14(20²)
= 2(3,14(400)
= 2(1.256)
= 2.512 CM²
LP 1/4 BOLA :
= 3/2πr²
= 3/2(3,14(20²)
= 3/2(1.256)
= 3(628)
= 1.884 CM²
V :
= 2/3πr²
= 2/3(3,14(20²)
= 2/3(1.256)
= 2.512/3
= 837,34 CM³