Derivation of the formula, Total surface area of frustum of cone
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Lateral area of right circular cone is the difference of the areas of sectors of a circle of radii L1 and L2 and common central angle θ.
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I hope it will help you
Total surface area of frustum is
πl (R1 + R2) + π (r1 )^2 + π (r2)^2
Total surface area of cone is
π r ( l + r)
See the derivation in 3 pics
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Total surface area of frustum is
πl (R1 + R2) + π (r1 )^2 + π (r2)^2
Total surface area of cone is
π r ( l + r)
See the derivation in 3 pics
Pls mark as a brainlist
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ArshuBhagat:
i need derivation
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Of derivation
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