Question

what is the formula of volume of frustum of cone ​

Answer 1

$</p><p></p><p>\huge{\boxed{ \bold{ \frac{1}{3} \pi h \left( R^{2} + r^{2} + Rr \right) }}} </p><p></p><p>$

Where,

π = 3.14

h = height of frustum of cone

r = radius of lower side of cone

R = radius of higher side of cone

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

$\Large\mathcal\green{FRUSTUM}$

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

$\implies \: csa = \pi \: l(r1 + r2)$

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

$\implies slant \: hieght = \sqrt{h - ( {r1}^{2} + {r2}^{2}) }$

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