alleryആരം r ഉള്ള ഒരു ഗോളത്തിന്റെ ആകെ ബാഹ്യ വിസ്തീർണ്ണം കണക്കാക്കുന്ന ബീജഗണിത പദപ്രയോഗം ഏതാണ്?
A2pi * r^2
B4pi * r^2
C(4/3)പൈ * r^3
D(2/3)പൈ * r^3
Answer & Solution
Correct answer: B. 4pi * r^2
ആരം r ഉള്ള ഒരു ഗോളത്തിന്റെ ഉപരിതല വിസ്തീർണ്ണം 4 * pi * r^2 കൊണ്ട് നൽകിയിരിക്കുന്നു.
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