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sisi miring= 20 (a)
alas= 10 (b)
ditanya= tinggi (c)
c2= a2-b2
c2= 20 kuadrat - 10 kuadrat
c2= 400 - 100
c2= 300
c= akar 300 atau 10 akar 3
a. volume prisma= La.t
= 1/2.20.10 akar 3.24
= 2400 akar 3 cm3
b. luas permukaan prisma= 2La + Ka.t
= 2. 1/2. 20. 10 akar 3 + 3(20).24
= 200 akar 3 + 1440 cm2
= 40 (5 akar 3 + 36) cm2