No 3
L = 1/2 x a x t
L = 1/2 x 16 x 12
L = 8 x 12
L = 96 cm²
No 4
Siku" di A, maka panjang sisi miring:
BC² = 15² + 8²
BC² = 225 + 64
BC = √289
BC = 17 cm
L = 1/2 x AC x AB
L = 1/2 x 8 x 15
L = 4 x 15
L = 60 cm²
K = AC + AB + BC
K = 8 + 15 + 17
K = 40 cm
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No 3
L = 1/2 x a x t
L = 1/2 x 16 x 12
L = 8 x 12
L = 96 cm²
No 4
Siku" di A, maka panjang sisi miring:
BC² = 15² + 8²
BC² = 225 + 64
BC = √289
BC = 17 cm
L = 1/2 x a x t
L = 1/2 x AC x AB
L = 1/2 x 8 x 15
L = 4 x 15
L = 60 cm²
K = AC + AB + BC
K = 8 + 15 + 17
K = 40 cm