The volume of 2 sphere is in the ratio 27 ratio 8 find ratio of their curved surface area
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Answer:
Step-by-step explanation:
let the radius of two ( 2 ) spheres are = r1 and r2
= 27 : 8 = 4/3 π r1³ : 4/3 π r2³
= 27 : 8 = r1³ : r2³
= ∛ 27 : 8 = r1 : r2
= 3 : 2 = r1 : r2
=r1 : r2 = 3 : 2
∴ ratio of their curved surface area = 4πr1² : 4πr2²
= r1² : r2²
= 3² : 2²
= 9 : 4
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