allery7 സെ.മീ (pi = 22/7) ആരമുള്ള ഒരു ഗോളത്തിന്റെ ഉപരിതല വിസ്തീർണ്ണം കണ്ടെത്തുക.
A154 cm²
B308 cm²
C1437 cm²
D616 cm²
Answer & Solution
Correct answer: D. 616 cm²
ഉപരിതല വിസ്തീർണ്ണം 4 പൈ r വർഗ്ഗം = 4 x (22/7) x 49 = 616 ചതുരശ്ര സെന്റീമീറ്റർ.
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