A cone has a base radius of 8cm and height 11cm. calculat...
A cone has a base radius of 8cm and height 11cm. calculate , correct to 2d.p, the curved surface area
341.98cm2
276.57cm2
201.14cm2
477.71cm2
Correct answer is A
Where l2 = h2 + r2
l2 = 112 + 82
l = √185
l = 13.60cm
The formula of CSA of Cone is πrl
227 * 8 * 13.60
= 341.979 or 341.98 (2d.p)
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