Question

which is the area of a circle with a radius of 2 units? (use 3.14 for ) 6.28 square units 12.56 square units 25.12 square units 40 square units

Answer 1

The area of the circle can be formulated as A = πr². So if the radius is 2 units, then you simply use it and multiply everything. 

First you substitute the data:

A = πr²
A = (3.14)(2)²

Then multiply everything and get to the answer of A = 12.56 square units

Thus, the answer is 12.56 square units.