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February 27th, 2017, 01:38 PM   #1
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Surd help

How do I work out the area of a triangle prism as a surd?

I've got the area of the triangle as a surd 2√70 and the length (which is 46cm).

Thanks.

Last edited by skipjack; February 28th, 2017 at 08:00 AM.
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February 27th, 2017, 02:38 PM   #2
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Quote:
Originally Posted by tenpence View Post
How do I work out the area of a triangle prism as a surd?

I've got the area of the triangle as a surd 2√70 and the length (which is 46cm).

Thanks.
Just multiply ...

$46 \cdot 2\sqrt{70} = 92\sqrt{70} \, cm^3$

You really need to work on your arithmetic with radicals...


Last edited by skipjack; February 28th, 2017 at 08:01 AM.
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February 28th, 2017, 06:07 PM   #3
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Quote:
Originally Posted by tenpence View Post
How do I work out the area of a triangle prism as a surd?

I've got the area of the triangle as a surd 2√70 and the length (which is 46cm).

Thanks.
Do you mean the surface area? Do you have the measurements of the lengths? A diagram?
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