Sebuah Kerucut Mempunyai panjang jari-jari 5cm dan Volume 314 Cm^3. Luas Selimut Kerucut adalah?
Thanks Yang Udah Jawab
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Jawab:
Penjelasan dengan langkah-langkah:
r = 5 cm
V = 314 cm³
V = 1/3 π r² t
314 = 1/3 x 3,14 x 5² x t
t = 314 x 3/ 3,14 x 5²
t = 12
s = √r² + t²
= √ 5²+12²
= √ 169
= 13 cm
Luas selimut kerucut =π r s
= 3,14 x 5 x 13
= 204,1 cm²