what is the surface area and volume of a sphere with radius 2?

Answer 1

surface = 2piR
area = piR^2
volume = 4/3¶r^3

so the answers are
surface = 4pi
area= 4pi
volumen = 32/3pi

Answer 2

pi represents the ratio of the circumference to the diameter of any circle. pi is approximately 3.14 . Let r = radius of sphere.

The surface area formula for a sphere is S = 4(pi)(r^2).

S = 4(pi)(2^2)
S = 4(pi)(4)
S = 16(pi) which is approximately 50.24 units squared

The volume formula of a sphere is V = (4/3)(pi)(r^3).

V = (4/3)(pi)(2^3)
V = (4/3)(pi)(8)
V = (32/3)(pi) which is approximately 33.50 units cubed

Answer 3

S=4 pi*r^2 = 16*pi =50.265

V =4/3 *pi*r^3 = 32pi/3 =33.51

Answer 4

voloume is 4/3pi r^3

area is 4pi r^2

4/3*pi*8 = voloume = 32pi/3

4*pi*4 = area = 16pi