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രണ്ട് അർദ്ധഗോളങ്ങളുടെ ആരങ്ങളുടെ അനുപാതം 1:2 ആണെങ്കിൽ, അവയുടെ ഉപരിതല വിസ്തീർണ്ണത്തിന്റെ അനുപാതം എന്താണ്?

A2:4

B1:4

C2:6

D1:8

Answer:

B. 1:4

Read Explanation:

അർദ്ധ ഗോളത്തിന്ടെ ഉപരിതല വിസ്തീർണം = 3𝜋r² ആരങ്ങൾ തമ്മിലുള്ള അനുപാതം r₁ : r₂ = 1:2 ഉപരിതല വിസ്തീർണങ്ങൾ തമ്മിലുള്ള അനുപാതം = r₁² : r₂² = 1² : 2² = 1 : 4


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