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A thin piece of wire is 40 meters long and is cut into 2 [#permalink]
22 May 2006, 07:37
0% (00:00) correct
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A thin piece of wire is 40 meters long and is cut into 2 pieces. One piece is used to form a circle with a radius of r, the other is used to form a square. No wire is left over. Which of the following represents the total area of both?
b. (pie*r)^2 + 10
c. (pie*r)^2 + 1/4(pie^2*r^2)
d. (pie*r)^2 + (40 - 2*pie*r)^2
e. (pie*r)^2 + (10 - 1/2*pie*r)^2
Please show your work. This one lost me....[/quote][/code]