Question

frustum of cone formulas csa and tsa and volume​

Answer 1

Answer:

Volume of frustum of cone:

Volume (V) = 1/3 * pi * h(r2 + R2 + r*R)

where

r = radius of smaller circle

R = radius of bigger circle (or radius of base of the cone)

h = height of the frustum

Curved Surface Area of frustum of cone:

Curved Surface Area (CSA) = pi * l(R + r)

where

r = radius of smaller circle

R = radius of bigger circle

l = slant height of the frustum

TotalSurface Area of frustum of cone:

Total Surface Area (TSA) = pi * l(R + r) + pi(R2 + r2)

where

r = radius of smaller circle

R = radius of bigger circle

l = slant height of frustum

Answer 2

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$\bf\Huge\red{\mid{\overline{\underline{ ANSWER }}}\mid }$

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$\Large\fbox{\color{purple}{QUESTION}}$

SURFACE AREA VOLUME FORMULAS

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$\Large\fbox{\color{purple}{ SOLUTION }}$

$\Large\mathcal\green{FRUSTUM}$

$\implies \: tsa = \pi \: l(r1 + r2) + \pi \: {r1}^{2} + \pi {r2}^{2}$

$\implies volume = \frac{1}{3}\pi \: h( {r1}^{2} + r1.r2 + {r2}^{2} )$

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