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Mapel : matematikabab : SPLDV dan Sudut
1)SPLDV
K = 8 cm
p - l = 4
p = 4 + l
2(p + l) = 8
2p + 2l = 8
2(4 + l) + 2l = 8
8 + 2l + 2l = 8
4l = 0
l = 0 cm
p = 4 +0 = 4 cm
L = p × l
L = 4 × 0
L = 0 cm^2
2)Sudut
Ingat !
Penyiku = 90 derajat
Pelurus = 180 derajat
Pelurus = 1/5 × 180 = 36 derajat
Penyiku = 90 - 36 = 54 derajat