Where l2^{2}2 = h2^{2}2 + r2^{2}2
l2^{2}2 = 112^{2}2 + 82^{2}2
l = √185
l = 13.60cm
The formula of CSA of Cone is πrl
227\;\frac{22}{7}722 * 8 * 13.60
= 341.979 or 341.98 (2d.p)
