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The length and breadth of a rectangle are (5.7 ± 0.1) cm and (3.4 ± 0.2) cm. Calculate the area of the rectangle with error limits. |
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Answer» I = (5.7 ± 0.1) cm b = (3.4 ± 0.2) cm Area = lb = 5.7 × 3.4 = 19.38 cm2 ΔA/A = (ΔI/I) + (Δb/b) ⇒ ΔA = ((0.1/5.7) + (0.2/3.4)) × 19.4 = 1.5 cm2 ∴ A = (19.4 ± 1.5) cm2 |
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