the surface areas of two spheres are in the ratio 1 : 4, find the ratio of their volumes.
Answers
Answered by
1
Step-by-step explanation:
Consider r and R as the radii of two spheres
We know that
4πR
2
4πr
2
=
4
1
So we get
(
R
r
)
2
=(
2
1
)
2
It can be written as
R
r
=
2
1
Consider V
1
and V
2
as the volumes of the spheres So we get
V
2
V
1
=
4/3πR
3
4/3πr
3
We can write it as
(
R
r
)
3
=(
2
1
)
3
=
8
1
Therefore, the ratio of their volumes is 1:8.
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Answered by
0
Answer:
Consider r and R as the radii of two spheres
We know that
4πR²/4πr² = 4/1
So we get
( R/r )² =( 2/1 )²
It can be written as
R/r = 2/1
Consider V1 and V2 as the volumes of the spheres So we get
V1 / VV =4/3πR³/4/3πr³
We can write it as
( r/R )³ =( 1/2 )³ = 1/8
Therefore, the ratio of their volumes is 1:8.
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