My Math Forum help: could not answer

 Geometry Geometry Math Forum

 February 12th, 2019, 01:27 PM #1 Member   Joined: Jan 2019 From: tornto Posts: 48 Thanks: 0 help: could not answer 1. Which of these rectangular prisms has a base area of 40cm² and a volume of 160cm³? A. Height = 2cm, base length = 10cm, base width = 4cm B. Height = 4cm, base length = 4cm, base width = 4cm C. Height = 4cm, base length = 10cm, base width = 4cm D. Height = 10cm, base length = 4cm, base width = 4cm 2. Find the volume of a rectangular prism with base length = 12ft, base width = 10ft, and height = 11ft. A. 33ft³ B. 242ft³ C. 660ft³ D. 1320ft³ 3. Find the volume of a triangular prism with base area = 84in.² and height = 9in. A. 93in.³ B. 378in.³ C. 756in.³ D. 1512in.³ Questions could not answer ? Any help with explanation? Thanks much. Last edited by skipjack; February 12th, 2019 at 02:22 PM.
 February 12th, 2019, 01:47 PM #2 Senior Member   Joined: Dec 2015 From: somewhere Posts: 536 Thanks: 81 V = width × length × height. 1. C, 2. D, 3. C Last edited by skipjack; February 12th, 2019 at 02:24 PM.
 February 12th, 2019, 02:36 PM #3 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,594 Thanks: 1038 Can you show your work?
February 12th, 2019, 05:28 PM   #4
Member

Joined: Jan 2019
From: tornto

Posts: 48
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Quote:
 Originally Posted by idontknow V = width × length × height. 1. C, 2. D, 3. C
thanks

for #1. i thought its D .. BUT AFTER REVIEW FOUND ITS C ...
THANKS MAN FOR CORRECTING ME

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