Question

The length and breadth of a rectangle is measured to be 2.3+_0.2 and 1.6+_0.1 calculate the area

Answer 1

Answer:

length = 2.3+0.2=2.5

breadth=1.6+0.1=1.7

area =l × b= 2.5×1.7=4.25

hope it helps

Answer 2

Answer:3.6+-0.55

Explanation:Area of rectangle is length*breath

Error in area is

dA/A=dl/l+db/b

dA/A = 0.2/2.3 + 0.1/1.6

(1.6*0.2 + 0.1*2.3)/1.6*2.3

0.55/3.6

3.6+_0.55