Sir in question 8 of chapter 13.1 why are we adding CSA of cone and not deducting it?
QR is a tangent at Q. PR //AQ, where AQ is a chord through A, the end point of the diameter
AB and P is a centre. Prove that BR is tangent at B.
The sum of four consecutive numbers in an AP 32 and the ratio of the product of the first and last term of the product of two middle terms 7:15 find number.