Asked by URGENT HELP!!!!

Regular triangular pyramid has the slant height k=12 cm and lateral area A = 198 cm2. Find the length of the base edge.
Answered by Scott
3 congruent triangles make up the 3 sides

the area of a side is ... 198 / 3 cm^2

the slant height is the height of a triangular side

you have the area and the height of a triangle ... how do you find the base length?
Answered by URGENT HELP!!!!
Would you multiply by 2
Answered by Scott
A = 1/2 * b * h
Answered by me
how to find the area with a slant.
Answered by Anitha Dumay
12x/2 x 3 =198
Answered by Anitha Dumay
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Answered by Nado
Hi peeps!
How you do the problem is you do is you know that because its a regular triangle pyramid all sides are congruent so Al= 1/2 Pb*k.
So you plug in the numbers and the answer you get is 198=1/2*3*Ab*12
and in the end the answer you get is 11cm!

Hope this helped!
Answered by Anonymous
Ahh thank you so much Nado!!!!
Answered by Anonymous #2
Nice
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