Q.
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
2Rr(R+r)
b
8R(R+r)(3R+r)
c
2r+4R
d
5R2+2r
answer is A.
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