( a ) L alas :
½ x alas segitiga x tinggi segitiga
½ x 5 x 12
½ x 60
30
(b) V :
L alas x Tinggi
30 x 12
360
(c) L :
( 2 x L alas ) + ( k segitiga x tinggi )
( 2 x 30 ) + ( 30 x 12 )
60 + 360
420
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( a ) L alas :
½ x alas segitiga x tinggi segitiga
½ x 5 x 12
½ x 60
30
(b) V :
L alas x Tinggi
30 x 12
360
(c) L :
( 2 x L alas ) + ( k segitiga x tinggi )
( 2 x 30 ) + ( 30 x 12 )
60 + 360
420