Question

The length and breadth of a rectangle are 5.7 +_0.1cm and 3.4+_0.2cm.calculate area of the rectangle with error limits

Answer 1

Solution:

 

l = (5.7 ± 0.1)cm 
b= (3.4 ± 0.2)cm 
A = l x b 
= 5.7 x 3.4 = 19.38cm2 = 19.0 cm2.

 

 






= 



Therefore Area = (19.0 ± 1.5) sq.cm.