Question

the length and breadth of a rectangle are (5.7+_ 0.1 ) cm and ( 3.4+_ 0.2) cm respectively . calculate the area of the rectangle with error limits​

Answer 1

Area of rectangle is l × b

L= 5.7±0.1 cm

B=3.4±0.2cm

A=9.69 cm

∆A/A=∆L/L+∆B/B

∆A/A= 0.1/5.7+0.2/3.4

= 74/969

∆A=(74/969).A

∆A=(74/969)9.69

∆A=0.74

Area= 9.69±0.74