Jake cut out 3 small circles and 5 big circles from a piece of cardboard. The radius of each small circle was x inches and the radius of each big circle was y inches. The expression below shows the total number of square inches of cardboard that Jake used for cutting out the circles.

3πx2 + 5πy2

What does the term 5πy2 in the expression represent?

The total number of circles

The total area of all the circles

The total area of the big circles

The total area of the small circles

Question

Jake cut out 3 small circles and 5 big circles from a piece of cardboard. The radius of each small circle was x inches and the radius of each big circle was y inches. The expression below shows the total number of square inches of cardboard that Jake used for cutting out the circles.

3πx2 + 5πy2

What does the term 5πy2 in the expression represent? 

 The total number of circles 

 The total area of all the circles 

 The total area of the big circles 

 The total area of the small circles

ybarrap · Answer

Do you know the area of a circle?

anonymous · Answer

No..

ybarrap · Answer

The area of a circle of radius $r$ is $\pi r^2$, where $\pi$ is just a constant. The represents the number of "squares" that can fit inside a circle. If you have  a circle of radius $y$, what would be the radius of that circle?

anonymous · Answer

Oh nevermind! I got it! Thanks!

ybarrap · Answer

ok