14pi = 43.982297150257105338477007365913
You can only express this exactly by leaving it as is: 22/7 times pi. If you want a decimal approximation, use an approximation of pi, for example. 3.1416, and do the calculation on a calculator.
______ 9*22/7 = 28.285714
the same as pi squared, which is 9.86960440109
circumference=pi circumference=pi circumference=pi
22/7=pi (roughly) 7 times pi is 21.99115 pi is 3.1415926535898 etc
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14pi = 43.982297150257105338477007365913
The circumference of a circle is diameter times pi or pi times the radius doubled. Pi is equivalent to 22/7. Multiply 21 by 3.14 which gives you 65.999999... 7
The formula is d x pi. Therefore, the answer would be 7 times pi.
Multiply 2 times pi (3.14 OR 22/7) times the radius 2(pi)r
You can only express this exactly by leaving it as is: 22/7 times pi. If you want a decimal approximation, use an approximation of pi, for example. 3.1416, and do the calculation on a calculator.
Just multiply the diameter times pi. Pi is approximately 3.1416.
Volume is 4/3 pi*radius*radius*radius 3.14 times 7 times 7 times 7 times 4 divided by 3= volume 1436.2666666 Surface area is 4 * pi * radius * radius 4 times 3.14 times 7 times 7=surface area 615.44
Two times the radius times pi equals the circumference of a circle. 2 x 3.5 = 7 7 x pi = 7 x 3.1416 = 21.99 or about 22
Times it by 2, then times it by pi. 3.14 if no calcultor (22/7) or just press the shift key then pi on your calculator
pi times 49, or if you round pi to 3.14 it's 153.86