The volume of the given figure is required.
The required volume is 490π cm³
Volume
r = Radius of semicircle = 7 cm
h = Height of prism = 20 cm
The volume of a cylinder is
[tex]\pi r^2h[/tex]
The volume of the given shape will be half of a cylinder, so
[tex]V=\dfrac{1}{2}\pi r^2h\\\Rightarrow V=\dfrac{1}{2}\pi\times 7^2\times 20\\\Rightarrow V=490\pi\ \text{cm}^3[/tex]
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