the length and breadth of rectangle are(5.7=01)cm and(3.4=0.2)cm.calcylate the
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Length = 5.7 ± 0.1 cm
breadth = 3.4 ± 0.2 cm
A = Lb
= (5.7 × 3.4)
= 19.38 cm²
ΔA = A × (ΔL/L + Δb/b)
= 19.38 × (0.1/5.7 + 0.2/3.4)
= 1.48 cm²
Area of rectangle = (19.38 ± 1.48) cm²
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