Question

Based on the diagram, which is the best estimate of the area of the circle?

Answer 1

From the graph, it looks like the diameter is 7 units.
d = 7, r = 3.5
A = (pi)r^2 = 3.14 * 3.5^2 = 38.5 square units

Answer 2

These are the choices it gives me..
5 square units

twenty square units

thirty-five square units

forty-two square unit

Answer 3

I'd say 35 square units

Answer 4

Here's another way of doing this without using the formula for the area of a circle.
Look at the graph and count the number of whole squares inside the circle. Keep that number in mind. Then take the squares that are partially in the circle, and for each two or three of those, add another square to your count. The total is your estimate.