An Easy Geometry Problem

For students of class 9-10 (age 14-16)
Tariq Hasan Rizu
Posts: 5
Joined: Mon Aug 17, 2015 2:24 pm

An Easy Geometry Problem

Unread post by Tariq Hasan Rizu » Sat Jan 16, 2016 1:17 pm

A triangular pyramid has edge of length $\sqrt{2}$, the
volume is $\frac{a}{b}$ where a, b are co-primes. b-a = ?
:)
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Abdullah Al Mohaimin
Posts: 1
Joined: Tue May 24, 2016 6:23 am

Re: An Easy Geometry Problem

Unread post by Abdullah Al Mohaimin » Wed May 25, 2016 7:28 pm

Is the answer minus 2

mdhasib
Posts: 10
Joined: Fri Jul 22, 2016 11:43 am

Re: An Easy Geometry Problem

Unread post by mdhasib » Mon Jul 25, 2016 11:31 pm

The answer is 2 . The area of the base of the pyramid or the equilateral triangle is 3 square root /2 and the length of the altitude from the top of the pyramid is 2/3 square root hence the volume must be 1/3 and 3-1=2

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