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:

Area A = lb (length x breadth)

error % in length (Δl/l) x 100 = ±1%

error % in breadth (Δb/b) x 100= ±1%

error % in area is

(ΔA/A) x 100 = ±(Δl/l + Δb/b) x 100

error % in area = ±(1% + 1%) = ±2%

Option C. ±2%