alleryदो संकेंद्रीय वृत्तों के बीच के वलयाकार क्षेत्र को क्या कहा जाता है?
Aलेंस
Bत्रिज्यखंड
Cवलय (Annulus)
Dवृत्तखंड
Answer & Solution
Correct answer: C. वलय (Annulus)
एक ही केंद्र वाले दो वृत्तों से घिरे वलयाकार क्षेत्र को वलय (annulus) कहा जाता है।
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