Question

a square mesuring length 4.5 ± 0.8 m find it's area with error​

Answer 1

Answer:

1) 20.25 2)3.6

Explanation:

area of square = L2

Length = 4.5 m.

Area = 4.5*4.5 = 20.25m.

error in measurement of lengh (∆l)

according to formula

∆A/A = 2 * ∆l/l

∆A/20.25= 0.8/4.5

solve this you will get 3.6m