The length and breadth of a rectangle are 5.7 0.1
Asked by admin @ in Physics viewed by 282 People
The length and breadth of rectangle are 5.7+-0.1 cm and 3.4+-0.2 cm .calculate area of rectangle with error limits.
Answered by admin @
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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