The base of a right prism is a square of perimeter 20 cm and its height is 30 cm. The volume of the prism is

700 c m^{3}

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750 c m^{3}

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800 c m^{3}

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850 c m^{3}

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Solution

The correct option is A $750 c m^{3}$
Given, perimeter $= 4 a = 20$ cm
$∴ a = 5$ cm
Area $= a^{2} = 25 c m^{2}$
Volume $=$ Area $\times$ Height
Volume $= 25 \times 30$
Volume $= 750 c m^{3}$

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