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Find the base, lateral area, surface area and volume of the pentagon...

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user6933212 | (Level 2) eNoter

Posted April 23, 2013 at 2:28 AM via web

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Find the base, lateral area, surface area and volume of the pentagon below: http://www.flickr.com/photos/93084714@N07/8674297200/

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pramodpandey | College Teacher | (Level 3) Valedictorian

Posted April 23, 2013 at 10:16 AM (Answer #1)

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Area of base of pentagone ABCDE=area of trapezium ABCE +area of trangle  CDE

=(1/2)(9+14.56)X8.56+ (1/2)X8.56X9

=4.28 x(18+14.56)

=4.28 X 32.56

=139.36 sq unit

Surface area= 2 x area of base+ 5X 9X5

=139.36+225

=364.36 sq unit.

Volume of penta gone= 5x139.36

=696.8 cubic unit.

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