A prism

A prism with an altitude of 15cm has a base in the form of a regular octagon inscribed in a square 10cmx10cm. Find the volume of the prism.

Correct answer:

V =  1242.6407 cm3

Step-by-step explanation:

h=15 cm b=10 cm  a+2 a/2=b a+2 a=b  a=1+2b=1+2104.1421 cm  S=b2a2=1024.1421282.8427  V=S h=82.8427 15=1242.6407 cm3

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