Answer:
4pi
Step-by-step explanation:
area of a circle is pi*r^2
and you have diameter of 4
so 4/2 gives radius which is 2
A = pi*2^2 = 4pi
Volume of a sphere is all of the volume enclosed within the sphere.
4/3(pi)r^3
Answer:
a. area=452.16 sq m
circumference=75.16m
b. area
c. circumference
Step-by-step explanation:
The equation for r in the distance formula is r = d/t