1) A rectangular lamina has a length l = (6.9 + 0.2) cm and breadth b= (2.3 + 0.1) cm . Find the area of the lamina .
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Answered by
2
hey buddy so its
l= 7.1cm
b=2.4cm
then the area of the rectangular lamina is
l*b
=7.1*2.4
=17.04cm^2
hope it helps buddy
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Answered by
0
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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