Question

Find the surface area of a sphere with a circumference of 40 ft. Round to the nearest tenth. (1 point)

Answer 1

Surface are of a sphere is given by :
4 times pi times radius squared
= 4xpix(40ft) squared

Answer 2

This will equal around 6400pi ft squated

Answer 3

=20106.2 ft2

Answer 4

not a option i have

Answer 5

6.4
509.3
245.6
40.5
these are my options i have

Answer 6

@shubhamk u there

Answer 7

What are the units mentioned in the answer

Answer 8

I was a lot wrong
circumference is given by 2times pi times radius=40
So. radius =20/pi
Place this in formula for surface area given. by :4 x pi x radius squared
= 1600 / pi
= 509.3
T