alleryवर्तुळाची त्रिज्या 9 सेंमी. ताच्या सगळ्यांत लांब ताराची लांबाय कितली आसता?
A18 cm
B9 cm
C12 cm
D15 cm
Answer & Solution
Correct answer: A. 18 cm
सगळ्यांत लांब तार व्यास, त्रिज्याच्या दुप्पट, देखून 18 सेंमी.
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