alas sebua prisma berbentuk segitiga siku-siku dengan panjang salah satu sisi siku-sikunya 30 cm, volume prisma 30.000cm dan tinggi prisma 50 cm .hitunglah luas

PRISMA

V = 30.000
L.Alas × t prisma = 30.000
1/2 × 30 × a × 50 = 30.000
750a = 30.000
a = 30.000/750
a = 40 cm

jadi sisi siku siku alasnya satu lg 40 cm

sisi miring segitiganya
=> akar(40^2 + 30^2)
=> akar(1600 + 900)
=> akar2500
=> 50 cm

LuasAlas = 1/2 × 40 × 30 = 600 cm^2

Kel. Alas = 30+40+50 = 120 cm

LuasPrisma
=> 2×L.Alas + Kel.Alas × t prisma
=> 2×600 + 120×50
=> 1200 + 6000
=> 7200 cm^2

v = 1/2 x a x tΔ x t
30.000 = 1/2 x 30 x tΔ x 50
30.000 = 750 tΔ
tΔ = 30.000 / 750
tΔ = 40 cm

c = √30² + 40²
c = √900 + 1600
c = √2500
c = 50 cm

Lp = (2 x 1/2 x a x tΔ) + (a + b + c)t
Lp = (2 x 1/2 x 30 x 40) + (30 + 40 + 50)50
Lp = 1200 + (120)50
Lp = 1200 + 6000
Lp = 7200 cm²