Jawabanmu

2014-07-20T07:07:12+07:00
Kalau limasnya persegi

tinggi segitiga
= \/12² +.5²
= \/144 + 25
= \/169
= 13 cm

Luas permukaan limas
= LSegitiga x 4 + La
= ( 1/2 x 13 x 10 ) x 4 + ( 10 x 10 )
= 65 x 4 + 100
= 260 + 100
= 360 cm²