Find the total surface area of a cone, if its radius 14 m and slant height 49 m. (Use π=227).
2762m2
2772m2
2672m2
1772m2
A
2772m2
B
2672m2
C
1772m2
D
2762m2
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Solution
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Given r=14m,s=49m
Then, Surface area of a cone
=πrs+πr2
=227×14×49+227×14×14
=2156+616
=2772m2.
Therefore, option B is correct.
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