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1540 = 2 x 22/7 x 7 x t
t = 1540/44
= 35 cm
V = πr²t
= 22/7 x 7 cm x 7 cm x 35 cm
= 5390 cm³
1540= 2×22/7×7×t
1540=44t
t= 1540÷44
t= 35 cm
Vt= πr²×t
22/7×7×7×35
= 5390 cm³