Question

Based on the formula that you developed in question 3, what is the area of the circle? How do you know your answer is correct? Explain.

Answer 1

πr2.

Explanation:

The shape changed, but the amount of space inside the shape remained the same. The space inside the parallelogram is the same as the space, or area, inside the circle. The area of the circle is 0.5 × circumference × radius = πr2.

Answer 2

Area is πr²

Explanation:

The area of a circle is given as

A = πr²

Where r, which is half of the circumference of the circle, is the radius of the circle.

Where π = 3.14...