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OpenStudy (anonymous):
what would be the surface area for this regular pyramid? base perimeter is 45cm
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OpenStudy (anonymous):
OpenStudy (anonymous):
(0.5*15*15) + 3( 0.5*9*15) = 112.5 + 3(67.5) = 112.5 + 202.5 = 315cm^2
OpenStudy (anonymous):
Just work out the area of each face
OpenStudy (anonymous):
okay thank you
OpenStudy (anonymous):
No prob
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