# calculate the area of a circle with a radius which is 5 times the radius of the circle with a circumference of 3 [latex] \pi [/latex]

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C=3pi C=2pir 2pir=3pi r=3pi/2pi r=1,5[j] R=5r=5*1,5=7,5[j] A=pir^2 A=7,5^2*pi A=56,25pi[j^2]

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