Question

8. The length and breadth of a rectangle are (5.7 +0.2)cm and (3.4 +0.2)cm.. Calculate area of
figures.
rectangle with error limits.​

Answer 1

The area of the rectangle with error limits is (19.38 ± 1.48) cm. Finally the area of rectangle with the error limits = (19.38 ± 1.48) cm.

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Answer 2

Explanation:

Length:5.7+0.2 cm

breadth 3.4+0.2 cm

$area = l b + error in area$

∆a/a=∆l/l+∆b/b

∆a=a(∆l/l+∆b/b)

∆a=(5.7×3.4)(0.2/5.7+0.2/3.4)

∆a=19×(0.03+0.06)

∆a=19×0.09

∆a=1.7=2

Area=19+ 2 cm