Sebuah kerucut memiliki panjang garis pelukis 28 cm kerucut tersebut terbuat anyaman bambu seluas 1.232 cm² Tentukan diameternya
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Jawaban:
d = 28 cm
Penjelasan dengan langkah-langkah:
Luas Selimut Kerucut = πrs
..
Dimana:
π = konstanta lingkaran
r = jari-jari
s = garis pelukis
..
maka:
1232 cm² = 28πr
πr = 1232/28
πr = 44
r = 44/(22/7)
r = 44 x 7/22
r = 308/22
r = 14 cm
..
d = 2r
d = 2 x 14
d = 28 cm
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alfat}}[/tex]
1.232 = 22/7(28)R
1.232 = (22(28)/7)R
1.232 = (616/7)R
1.232 = 88R
88R = 1.232
R = 1.232/88
R = 14/1
R = 14 CM
MAKA :
D = (2 × 14)
= 28 CM