this
some on help me plllz
a sphere has a surface area of 32in^2
a,radius=_______ b,volume=_________
Delete
Share
This Question is Closed
ajprincess
Best Response
You've already chosen the best response.
1
Surface area of a sphere = \(4\pi r^2\)
\(2=4\pi r^2\)
From this r(radius) can be found in terms of \(\pi\)
Volume of a sphere=\(\large\frac{4}{3}\pi r^3\)
Can u find nw? @this
this
Best Response
You've already chosen the best response.
0
sa=4pi r^2
32/4pi=4pir^2/4pi
32=r^2
i dont know what to do next):
ajprincess
Best Response
You've already chosen the best response.
1
32/4pi=4pi r^2/4pi
8/pi=r^2
to find r. find the sqrt of 8/pi
r=sqrt(8/pi)
ajprincess
Best Response
You've already chosen the best response.
1
to find the volume use
v=4/3pi r^3
this
Best Response
You've already chosen the best response.
0
thanks so much @ajprincess
ajprincess
Best Response
You've already chosen the best response.
1
Welcome:) Did u find the volume?
this
Best Response
You've already chosen the best response.
0
i got 2.25=r is that right?
ajprincess
Best Response
You've already chosen the best response.
1
pi=?
this
Best Response
You've already chosen the best response.
0
i cancel out the pi
ajprincess
Best Response
You've already chosen the best response.
1
what did use for pi? 3.14 or 22/7?
this
Best Response
You've already chosen the best response.
0
i use 3.48
this
Best Response
You've already chosen the best response.
0
wait let me show u how i did it the whole thing
ajprincess
Best Response
You've already chosen the best response.
1
ok:)