Suatu kerucut memiliki diameter alas 14 cm dan tinggi 24 cm. luas permukaan kerucut adalah ...... satuan luas.
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Kelas IX
d = 14 cm
r = 7 cm
t = 24 cm
s = 25 cm (Phytagoras)
L permukaan = Luas Selimut + Luas Alas
= π r s + π r²
=
= 22 x 25 + 154
= 550 + 154
= 704 cm²
= 224 π cm²
Mohon maaf apabila ada kesalahan