Question

i need the solution ofcalculating the area of a circle with Radius 21.5 ±0.1

Answer 1

do you know the formula for area of circle?

Answer 2

yes

Answer 3

Plug 21.5 for the radius into the equation and u will get ur answer

Answer 4

the question says how accurate is the result. cuz it is base on uncertainties

Answer 5

is anyone there.i need the solution

Answer 6

3.14*21.5^2=1451.465

Answer 7

what about the uncertainty.how acurate is the result

Answer 8

Using the long pie it would be 1452.201204

Answer 9

the error in the area will be
\[\Delta A = \sqrt{(\Delta r/r)^2+(\Delta r/r)^2}\]