Question

The error in the measurement of the
sides of a rectangle is 1%. The error in
the measurement of its area is
(A) 1% (B) 1/2%
(C) 2% (D) None of the above.
​

Answer 1

Answer:

2%

Explanation:

Area=l × b

error in area =error in l + error in b

=1 + 1=2%

Answer 2

Answer:

Explanation:

as area if rectangle =length ×breadth

then

percentage error in area = percentage error in length + percentage error in breadth

as given in measuring the length of sides there is error of 1% then

p% error in area = 1%+1%

=2%