5dregensleyer
Mencari jari-jari krucut kliling = 2 x π x r 18,84 = 2 x 3,14 x r 18,84 = 6,28 r r = 18,84/6,28 r = 3 cm tinggi kucut adalah t = √ 5² - 3² = √ 25 - 9 = √ 16 = 4 cm volum = 1/3 x π x r² x t = 1/3 x 3,14 x 3 x 3 x 4 = 3,14 x 12 = 37,68 cm³
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18 votes Thanks 57
vina1500
kalau boleh nanya, kamu itu kelas berapa ya??
18,84 = 2 × 3,14 × r
r = 18,84/(2×3,14)
r = 3 cm
t kerucut = √(s² - r²) = √(5² - 3²) = 4 cm
volume kerucut = 1/3 × πr² × t = 1/3 × 3,14 × 3² × 4 = 37,68 cm³
kliling = 2 x π x r
18,84 = 2 x 3,14 x r
18,84 = 6,28 r
r = 18,84/6,28
r = 3 cm
tinggi kucut adalah
t = √ 5² - 3²
= √ 25 - 9
= √ 16
= 4 cm
volum = 1/3 x π x r² x t
= 1/3 x 3,14 x 3 x 3 x 4
= 3,14 x 12
= 37,68 cm³
semoga membantumu