Question

A circle has an area of 36 pie squared. The radius of the circle is changed by a scale factor of 1/2. How do the areas of the two circles compare?

A The area of the circle is 1/2 orignal area

B The area of the new circle is 1/4 the original area.

C The area of them new circle is 1/3 the original area.

D The area of the new circle is 3 ties the original area.

Answer 1

When you change the radius by a certain factor, the area is changed by the square of that factor.

Answer 2

Thanks you, i'll go ahead and take this down so others can get their s answered ^^

Answer 3

ok. You're welcome.