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Surface Areas and Volumes
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28/07/2021 10:07 am
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Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m. (Assume π = 22/7)
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28/07/2021 10:08 am
Radius of cone, r = 24/2 m
= 12m
Slant height, l = 21 m
Total Surface area of the cone = πr(l + r)
Total Surface area of the cone
= (22/7) × 12 × (21 + 12) m2
= 1244.57m2