3. Find the total surface area of a cone, if its slant height is 8 m and diameter of its base is 28 m.
Answers
Answered by
0
Answer:
968 m²
Step-by-step explanation:
Total surface area of cone = πr(r+l)
Given, slant height (l) = 8 m
Diameter of base = 28 m
=> radius (r) = 28/2 m = 14 m
Therefore, T.S.A. = 22/7 × 14 × (14+8) m² = 44 × 22 m² = 968 m²
Answered by
1
Answer:
968 m²
Step-by-step explanation:
l = 8m, r = d/2 = 28/2 = 14m
TSA of cone = πrl + πr²
Assuming π = 22/7,
πrl = 22/7 × 14 × 8
= 352 m²
πr² = 22/7 × 14² = 616 m²
TSA = 616 + 352 = 968 m²
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