s² = 12² + 5²
s² = 144 + 25
s = √169
s = 13
L tabung tanpa tutup
= 2πr + 2πr²t
= 2 . 3,14 . 5 + 2 . 3,14 . 25 . 14
= 31,4 + 2196
= 2229,4
L kerucut tanpa alas
= πrs
= 3,14 . 5 . 13
= 204,1
L Bangun
= 2229,4 + 204,1
= 2433,5 cm²
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s² = 12² + 5²
s² = 144 + 25
s = √169
s = 13
L tabung tanpa tutup
= 2πr + 2πr²t
= 2 . 3,14 . 5 + 2 . 3,14 . 25 . 14
= 31,4 + 2196
= 2229,4
L kerucut tanpa alas
= πrs
= 3,14 . 5 . 13
= 204,1
L Bangun
= 2229,4 + 204,1
= 2433,5 cm²