volume kerucut 314cm³, jika jari jari alasnya5cm, ..maka panjang garis pelukisnya??

Bab Bangun Ruang
Matematika SMP Kelas VIII

Kerucut
Volume = 314
(1/3) x π x r x r x t = 314
(1/3) x 3,14 x 5 x 5 x t = 314
t = 314 x 3 / (3,14 x 25)
t = 12 cm

s = √(r² + t²)
s = √(5² + 12²)
s = √(25 + 144)
s = √169
s = 13 cm