Luas Permukaan Prisma

Tutup

Tinggi

Alas

Jaring – jaring prisma

Rumus Luas Prisma :

L = (2 × La) + (K x t)

20 cm

Tinggi segitiga

Alas segitiga

L∆ = ½ x a x t

= ½ x 12 cm x 16 cm

= 96 cm²

20 cm

20 cm

20 cm

K∆ = a + b + c

= 12 cm + 16 cm + 20 cm

= 48 cm

Tinggi prisma

L = (2 × La) + (K x t)

= (2 × 96) + (48 × 20)

= 192 + 960

= 1.152 cm²

L∆ = ½ x a x t

= ½ x 15 cm x 20 cm

= 150 cm²

C

K∆ = a + b + c

= 15 cm + 20 cm + 25 cm

= 60 cm

L = (2 × La) + (K x t)

= (2 × 150) + (60 × 28)

= 300 + 1.680

= 1.980 cm²

L∆ = ½ x a x t

= ½ x 3 cm x 4 cm

= 6 cm²

K∆ = a + b + c

= 4 cm + 3 cm + 5 cm

= 12 cm

L = (2 × La) + (K x t)

= (2 × 6) + (12 × 8)

= 12 + 96

= 108 cm²

L∆ = ½ x a x t

= ½ x 9 cm x 12 cm

= 54 cm²

K∆ = a + b + c

= 12 cm + 9 cm + 15 cm

= 36 cm

L = (2 × La) + (K x t)

= (2 × 54) + (36 × 10)

= 108 + 360

= 468 cm²