alleryଏକ ବହିଃସ୍ଥ ବିନ୍ଦୁ P ରୁ PA ଏବଂ PB ସ୍ପର୍ଶକ ଟଣାଯାଇଛି। ଯଦି PA = 7 cm, ତେବେ PB କେତେ?
A14 cm
B49 cm
C3.5 cm
D7 cm
Answer & Solution
Correct answer: D. 7 cm
ଏକ ବହିଃସ୍ଥ ବିନ୍ଦୁରୁ ଏକ ବୃତ୍ତ ପ୍ରତି ଟଣାଯାଇଥିବା ସ୍ପର୍ଶକଗୁଡ଼ିକର ଦୈର୍ଘ୍ୟ ସମାନ, ତେଣୁ PB = 7 cm।
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