Jawaban:
bangun ruang
Vol. kerucut = 5.544 cm³ dan tinggi (t) = 27 cm
#menentukan panjang jari jari (r) kerucut
Vol. kerucut = 1/3 x πr² x t
5.544cm³ = 1/3 x 22/7 x r² x 27cm
5.544cm³ = 22/7 x r² x 9cm
5.544cm³ x 7 = 22 x r² x 9cm
38.808cm³ = 198cm x r²
r² = 38.808cm³/198cm
r² = 196cm²
r = √196cm² = √(14cm)² = 14cm
Jadi, panjang jari-jari (r) kerucut tersebut adalah 14cm.
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Jawaban:
bangun ruang
Vol. kerucut = 5.544 cm³ dan tinggi (t) = 27 cm
#menentukan panjang jari jari (r) kerucut
Vol. kerucut = 1/3 x πr² x t
5.544cm³ = 1/3 x 22/7 x r² x 27cm
5.544cm³ = 22/7 x r² x 9cm
5.544cm³ x 7 = 22 x r² x 9cm
38.808cm³ = 198cm x r²
r² = 38.808cm³/198cm
r² = 196cm²
r = √196cm² = √(14cm)² = 14cm
Jadi, panjang jari-jari (r) kerucut tersebut adalah 14cm.