A plate has a length 5 ± 0.1 c m and breadth 2 ± 0.01 c m . Then the area of the plate is

Question

A plate has a length 5 ± 0.1 c m and breadth 2 ± 0.01 c m . Then the area of the plate is, 10 ± 0.25 c m 2, 10 ± 0.01 c m 2, 10 ± 0.001 c m 2, 10 ± 1 c m 2

MARKS App · Accepted Answer

A = ab Δ A A = Δ a a + Δ b b = 0.1 5 + 0.01 2 = 0.2+0.05 1 0 = 0 . 25 10 Δ A = 0.025 × A = 0.25 cm 2

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