alleryଗୋଟିଏ କୋଠରୀ 10 m ଲମ୍ବା, 8 m ଓସାର ଏବଂ 3 m ଉଚ୍ଚ। ଏହାର ଚାରି କାନ୍ଥର ସମୁଦାୟ କ୍ଷେତ୍ରଫଳ କେତେ?
A240 m²
B108 m²
C216 m²
D144 m²
Answer & Solution
Correct answer: B. 108 m²
ଚାରି କାନ୍ଥର କ୍ଷେତ୍ରଫଳ ହେଉଛି 2(l + b)h = 2 x 18 x 3 = 108 ବର୍ଗ ମିଟର।
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