SOLUTION: a rectangular acrylic sheet is 36 cm by 25cm. from it, 56 circular buttons.each of diameter 3.5 cm have been cut out. find the area of remaining sheet.

Question 935636: a rectangular acrylic sheet is 36 cm by 25cm. from it, 56 circular buttons.each of diameter 3.5 cm have been cut out. find the area of remaining sheet.
Found 2 solutions by MathLover1, josmiceli:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

if a rectangular acrylic sheet is by , then its area is

if circular buttons, each of diameter have been cut out, then radius is
and, the area of all buttons is

the area of remaining sheet is

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The area of the sheet is:
cm2
----------------------
The radius of the buttons is:

cm
-------------------
The area of each button is:

cm2
--------------------
The total area of buttons is:
cm2
----------------------------
The area left over is:
cm2

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