keliling alas kerucut 31,4 dan garis pelukis 13 cm hitunglah volume kerucut

d = kll : π = 31,4 : 3,14 = 10 cm
r = 5 cm

t = 12 cm. Pake triple phytagoras yg 5,12,13

V = 1/3 × π × r × r × t = 1/3 × 3,14 × 5 × 5 × 12 = 314 cm^3