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=√3² + 4²
=√9 + 16
=√25
=5
Lp = ( 2. luas alas) + ( kliling alas x t )
= ( 2 x (a+b) x t : 2) + ( (4+8+5+5) x 6)
= ( 2 x ( 8 + 5) x 4 : 2) + ( 22 x 6 )
= ( 2 x 13 x 2 ) + ( 132)
= 52 + 132
= 184 cm³