Using rule of volume integral , The answer of y=x, y-=0 and x=6 is [tex]216 \pi[/tex].
The process of combining smaller parts into a single, cohesive whole is known as integration.
A volume integral is a specific instance of multiple integrals and is used to denote an integral across a 3-dimensional domain in mathematics, notably multivariable calculus. In physics, volume integrals are crucial for many applications, such as calculating flux densities.
area covered by y=x y=0 and x=6 is [tex]\frac {1}{2} * 6 * 6[/tex]
=18 [tex]unit^{2}[/tex]
Perimeter covered by revolving the area about x-axis, y-axis , x=6 and x=9 is [tex]2*\pi *6[/tex]
=[tex]12 \pi[/tex]
Volume = [tex]18 * 12 \pi[/tex]
=[tex]216 \pi unit ^{3}[/tex]
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