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What is the lateral area of a regular pyramid with a square base which has a slant height of 9 units and base side lengths of 7 units?

A 378 units squared

B 234 units squared

C 189 units squared

D 126 units squared

ynguyen  Jun 12, 2018
 #1
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The LA=2sl where s is the length of the square base. So the lateral surface area us D 126.

Alecdanub  Jun 12, 2018

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