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2014-05-12T20:36:03+07:00
Dicari dlu tinggi segitiganya
10^2 = 6^2 + t^2
100 = 36 + t^2

t^2 = 100 – 36
t^2 = 64

t = √64
t = 8 cm

maka luas limas = L alas + 4 L segitiga
= (12 x 12) + (4 1/2 12 8)
= 144 + 192
= 336 cm2
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