Given height of bucket , h = 30cm
r1 = 14cm
r2= 7cm
Volume of a frustum = (1/3)h(r12+r22+r1×r2)
Volume of bucket = (1/3)×30(142+72+14×7)
= 10×(196+49+98)
= 3430
= 10780cm3
= 10.78 litres [∵1 litre = 1000 cm3 ]
Hence the bucket can hold 10.78 litres of water.