What is the percent uncertainty in the area of a circle whose ...

[bobthebuilder]

What is the percent uncertainty in the area of a circle whose radius is 1.8  104 cm?
 
  A)
 
  1.1
 
  B)
 
  5.6
 
  C)
 
  11
 
  D)
 
  24
 
  E)
 
  56

Question 2

What is the source of the energy the Sun radiates to us?
 
  A)
 
  chemical reactions
  B)
 
  nuclear fission reactions
  C)
 
  nuclear fusion reactions
  D)
 
  magnetic explosions
  E)
 
  cosmic rays

[dyrone]

Answer to Question 1

C

Answer to Question 2

C