please say the answer and don't post irrelevant answers
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please say the answer and don't post irrelevant answers
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Answer:
Lateral surface area of cone= pie×r×L
Step-by-step explanation:
L²=r²+h²
L²=3.5²+12²
L²=12.25+144
L²=156.25
L=underrrot156.25
L= 12.5m
CSA of cone= 22÷7×3.5×12.5
=137.5m²
Area of canvas required=137.5m²