R = C / (2 * pi)
r = 125.6 / (2 * 3.14)
r = 125.6 / 6.28
r = 20 <== the radius
diameter of a circle is twice the radius......2 * 20 = 40 <== diameter
7xy+2x+3+3xy
7xy+3xy+2x+3 ( combine like terms)
7xy+3xy=10xy
Answer: 10xy+2x+3
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You have to convert all terms to inches so that they are all like terms, there are 12 inches in a foot so you multiply everything by 12. You dont multiply the 10 inches though because its already in inches
6x12=72 8x12=96 2x12=24
Then you multiply to find the areas of the large shape. It was the 6ft and 8ft so you multiply the 72 and 96
72x96=6912
Then you multiply to find the smaller shape. It was the 2 and 10 so do 24 times 10.
24 x 10= 240
then you divide 240 by 12 to get to the feet so it
240/12 = 20ft