alleryଗୋଟିଏ ନିୟମିତ ବହୁଭୁଜର ପରିସୀମା 40 cm ଏବଂ ଆପୋଥେମ୍ (apothem) 6 cm ଅଟେ। ଏହାର କ୍ଷେତ୍ରଫଳ କେତେ?
A240 cm²
B46 cm²
C120 cm²
D60 cm²
Answer & Solution
Correct answer: C. 120 cm²
କ୍ଷେତ୍ରଫଳ ହେଉଛି ପରିସୀମାର ଅଧା ଗୁଣନ ଆପୋଥେମ୍, ତେଣୁ 0.5 x 40 x 6 = 120 ବର୍ଗ ସେଣ୍ଟିମିଟର।
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