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OpenStudy (anonymous):
a square based pyramid with side 18cm and height 12cm, calculate the surface area.
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OpenStudy (anonymous):
okay nevermind i got this question
OpenStudy (bambimonster):
a=2bsxb^2.. given height and side. so use Pythagoras theorem u will get half of the base= 13.14 then 13.14x2=base.. then just key in to the formula
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