If the ratio of diameters of two sphere is 3:7 find the ratio of their volume,find the ratio of their surface area
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Hello,
let the diameter's of two sphere are d₁ and d₂,respectively.
Therfore
d₁:d₂=3:7
so, ratio of their volume:
V=(4/3)πr₁³/(4/3)πr₂³;
=r₁³/r₂³= (d₁/d₂)³= (3/7)³= 27/343=27:343
the ratio of thei surface area:
As=4πr₁²/4πr₂²;
=r₁²/r₂²= (d₁/d₂)²= (3/7)²= 9/49=9:49
bye :-)
let the diameter's of two sphere are d₁ and d₂,respectively.
Therfore
d₁:d₂=3:7
so, ratio of their volume:
V=(4/3)πr₁³/(4/3)πr₂³;
=r₁³/r₂³= (d₁/d₂)³= (3/7)³= 27/343=27:343
the ratio of thei surface area:
As=4πr₁²/4πr₂²;
=r₁²/r₂²= (d₁/d₂)²= (3/7)²= 9/49=9:49
bye :-)
Answered by
2
Answer:
Hello,
let the diameter's of two sphere are d₁ and d₂,respectively.
Therfore
d₁:d₂=3:7
so, ratio of their volume:
V=(4/3)πr₁³/(4/3)πr₂³;
=r₁³/r₂³= (d₁/d₂)³= (3/7)³= 27/343=27:343
the ratio of thei surface area:
As=4πr₁²/4πr₂²;
=r₁²/r₂²= (d₁/d₂)²= (3/7)²= 9/49=9:49
Step-by-step explanation:
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