alas segitiga
= (30-14)/2
= 16/2
= 8 cm
t segitiga
= akar( 17^2 - 8^2 )
= akar( 289 - 64)
= akar ( 225 )
= 15 cm
t trapesium = tsegitiga = 15 cm
luas prisma trapesium
= 2 luas alas + 20(17) + 20(17) + 20(14) + 20(30)
=2( (14+30)15/2 ) + 20(17+17+14+30)
= (44)15 + 20(78)
= 660+ 156
= 816 cm^2
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alas segitiga
= (30-14)/2
= 16/2
= 8 cm
t segitiga
= akar( 17^2 - 8^2 )
= akar( 289 - 64)
= akar ( 225 )
= 15 cm
t trapesium = tsegitiga = 15 cm
luas prisma trapesium
= 2 luas alas + 20(17) + 20(17) + 20(14) + 20(30)
=2( (14+30)15/2 ) + 20(17+17+14+30)
= (44)15 + 20(78)
= 660+ 156
= 816 cm^2