Question

chalo dedo answer aur good wala morning ​

Answer 1

Answer:

In geometry, the circumference (from Latin circumferens, meaning "carrying around") is the perimeter of a circle or ellipse. ... More generally, the perimeter is the curve length around any closed figure. Circumference may also refer to the circle itself, that is, the locus corresponding to the edge of a disk.

Answer 2

$f = \frac{dp}{dt} \\ at \: t = 0 \: \: p = 2 \\ f = \frac{d(2 + 3t {}^{2}) }{dt} = 6t \\ f = 6t \\ at \: t = 3s \: \\ f = 6 \times 3 = 18$