Question

Sandy cut out 2 squares and 7 circles from a piece of cardboard. The length of the sides of each square was x inches and radius of each circle was y inches. The expression below shows how many more square inches of cardboard Sandy used for making the circles than the squares.

7πy2 - 2x2

What does the term 7πy2 in the expression represent?

The total area of 7 circles

The total area of 22 circles

The total area of all the shapes

The total area of all the squares

Answer 1

the area of a square is side^2 , here side = x, so the area of each square is x2
the area of a circle is π(radius)^2 , here the radius is y so the area of each circle is πy2

we have 7 circles and 2 square
so what does 7πy2 represent ?