allery6 cm ର ଏକ ସ୍ପର୍ଶକ ଏବଂ ଏକ ଛେଦକ ଏକ ବହିଃସ୍ଥ ବିନ୍ଦୁରେ ମିଳିତ ହୁଅନ୍ତି। ଛେଦକର ବାହ୍ୟ ଅଂଶ 4 cm ଅଟେ। ସମଗ୍ର ଛେଦକଟି କେତେ?
A9 cm
B10 cm
C8 cm
D12 cm
Answer & Solution
Correct answer: A. 9 cm
ସ୍ପର୍ଶକର ବର୍ଗ ବାହ୍ୟ ଅଂଶ ଗୁଣନ ସମଗ୍ର ଛେଦକ ସହିତ ସମାନ, ତେଣୁ 36 = 4 × ସମଗ୍ର ଛେଦକ, ଯାହା 9 cm ପ୍ରଦାନ କରେ।
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