Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

• Americ: a= 3
  b= 4
  
  =3.14(a^2 + ab)
  substitute the given a & b values in expression
  
  =3.14((3)^2 + (3*4))
  multiply inside parentheses
  
  =3.14(9 + 12)
  add inside parentheses
  
  =3.14(21)
  multiply
  
  =65.94
  
  
  ANSWER: 65.94
  
  Hope this helps! :)
  
• jarabokhorst:

  Answer:

  65.94

                                 

  Step-by-step explanation: