What is the approximate uncertainty in the area of a circle

[eddiedowen]

Homework Statement

Approximate uncertainty in the area of a circle of radius 5.5×10^4 cm?

Homework Equations

πr^2

The Attempt at a Solution

 

[pbuk]

What are the smallest and largest possible values for the radius? What are the smallest and largest possible values for the area?

 

[eddiedowen]

It doesn't say. That's all the information it gives. That's why I was confused.

 

[pbuk]

Well if the radius is stated to two significant figure as 5.5×10^4cm then the uncertainty is ±0.05x10⁴cm (or ±500cm) and the possible range is 5.45x10⁴cm to 5.55x10⁴cm.

 

[Evo]

People, please report members that do not fill out the template, it is against our rules for members to request help without completing the entire template, especially the part explaining what they've already done to soleve the problems themselves.