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പാദചുറ്റളവ് 12π സെന്റിമീറ്ററും ഉയരം 10 സെന്റിമീറ്ററും ഉള്ള ഒരു കോണിന്റെ വ്യാപ്തം എത്രയാണ്?

A85π

B120π

C178π

D210π

Answer:

B. 120π

Read Explanation:

പാദ ചുറ്റളവ് 2πr = 12π cm r = 6 cm വ്യാപ്തം = (1/3)πr^2h =(1/3)π×6^2×10 = 120π


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