Dalton estimated the area of a circle with a diameter of 12 inches as shown below. A = r2
A = 3(12)
A = 3(144)
A = 432 in.2
Which of the following statements about Dalton's work is NOT true?
FHe squared 12 correctly.
G. He used an appropriate value for i.
H. He used an appropriate value for r.
I. He multiplied 3 and 144 correctly.