alleryꯑꯄꯤꯀꯄꯥ ꯁꯤꯂꯤꯟꯗ꯭ꯔꯤꯀꯦꯜ ꯁꯦꯜ ꯑꯃꯒꯤ ꯚꯣꯜꯌꯨꯝ ꯑꯁꯤ ꯀꯔꯤꯒꯥ ꯃꯥꯟꯅꯕꯒꯦ?
A2π × ꯅꯨꯡꯒꯤ ꯔꯦꯗꯤꯌꯁ × ꯑꯋꯥꯡꯕꯥ × ꯑꯀꯪꯕꯥ꯫
B2π × ꯃꯤꯟ ꯔꯦꯗꯤꯌꯁ × ꯑꯋꯥꯡꯕꯥ × ꯑꯀꯅꯕꯥ꯫
C4π × ꯃꯤꯟ ꯔꯦꯗꯤꯌꯁ × ꯑꯋꯥꯡꯕꯥ × ꯑꯀꯅꯕꯥ꯫
Dπ × ꯃꯤꯟ radius² × ꯑꯋꯥꯡꯕꯥ × ꯑꯀꯪꯕꯥ꯫
Answer & Solution
Correct answer: B. 2π × ꯃꯤꯟ ꯔꯦꯗꯤꯌꯁ × ꯑꯋꯥꯡꯕꯥ × ꯑꯀꯅꯕꯥ꯫
ꯁꯦꯜ ꯑꯗꯨ ꯑꯅꯔꯣꯜ ꯇꯧꯕꯅꯥ ꯆꯥꯡꯆꯠꯇꯥ ꯔꯦꯗꯤꯌꯁꯀꯤ ꯁꯔꯨꯛ 2 pi ꯒꯤ ꯆꯥꯡꯗꯥ ꯂꯩꯕꯥ ꯑꯄꯤꯀꯄꯥ ꯁ꯭ꯂꯦꯕ ꯑꯃꯥ ꯄꯤ, ꯃꯁꯤꯗꯥ ꯄꯤꯔꯤꯕꯥ ꯑꯋꯥꯡꯕꯥ ꯑꯃꯁꯨꯡ ꯑꯀꯪꯕꯥ ꯑꯗꯨꯒꯥ ꯂꯣꯌꯅꯅꯥ꯫
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