5. The dimensions of an oil tin are 28 cm x 28 cm x 45 cm. Find the area of sin sheet
required to make 20 such tins.
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T.S.A = 2(lb+bh+lh)
T.S.A = 2(28×28+28×45×28×45)
T.S.A = 2 × 3304
T.S.A = 6608 cm²
T.S.A OF 20 SUCH TINS = 6608×20 = 132160 cm²
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