Question

Find the slant height of a cone with r = 3, surface area of 89 and pi = 3.14.
6.45
13.24
28.26
60.74
.

Answer 1

6.45 is the answer. Surface area of cone is given by the formula: \[\pi*r^{2} + \pi*r*s\] Where s is the slant height. So, if you substitute the values, you get the answer as 6.45