Question

7. Let us divide first by second and rationalise the divisor.
$3 \sqrt{ + \sqrt{5. \sqrt{2 + 1} } }$

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Answer 1

The height of a right triangular prism is 21 cm and its aspect ratio is 4:15:17. If the total area of the surrounding surfaces is 840 cm2, what is the volume of prism in cubic centimeter?