allery21 cm ବ୍ୟାସାର୍ଦ୍ଧର ବୃତ୍ତକଳାର ପରିସୀମା 86 cm। କ୍ଷେତ୍ରଫଳ ନିର୍ଣ୍ଣୟ କରନ୍ତୁ; π = 22/7 ନିଅନ୍ତୁ।
A462 cm²
B231 cm²
C693 cm²
D924 cm²
Answer & Solution
Correct answer: A. 462 cm²
ଆର୍କ ହେଉଛି 86−2 × 21 = 44 ସେମି, କୋଣ 44/132 × 360 ° = 120 °;
କ୍ଷେତ୍ର ହେଉଛି 120/360 × (22/7) × 21² = 462 cm² |
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