62 x pi2 = 611.9154729 = 611.9 (1 decimal place.) It's 611.915471469109395.
pi times the radius squared pi r squared
the same as pi squared, which is 9.86960440109
The square root of pi times pi is simply pi. Because pi*pi=pi squared, the squared and the square root will cancel each other, leaving just pi.
Circumference = pi times the diameter, or pi times 2 times radius. Area = pi times (radius squared)
Area=pi times radius squared Circumference=pi times diameter or pi times radius times two
The area of a circle is: pi times radius squared
(pi times radius squared) plus (pi times radius times slant).
That is correct because the surface area of a sphere is: 4*pi*radius squared
that would be pi squared
the area of a circle
area of a circle