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Garis Pelukis : X
X : 4 CM + 3 CM
X : 7 CM
X :
X : 2.64
Selimut Tabung :
π r s
3.14 x 3 x 2.64
3.14 x 7.92
24.86 CM²
Luas Bola
2 π r²
2 x 3.14 x 3 x 3
2 x 3.14 x 9
2 x 28.26
56.52 CM²
Luas Permukaan Bandul :
Luas Selimut Tabung + Luas Permukaan Bola
24.86 + 56.52
81.36 CM²
Nah Volume Cari sendiri
Saya cuma bisa bantu sampe sini :)
= √16-+9
=√25
=5 cm
luas permuk. = πr(r+s)
= 3.14×3(3+5)
= 94,2 × 15
= 141,3 cm²
volume = 1/3πr²t
= 1/3×3,14×3×3×4
= 37,68 cm³