d¹=9cm × 2
=18cm
d²=31 cm + 9 cm
=40 cm
L=1/2 × d¹ × d²
=1/2 × 18 cm × 40 cm
=9cm × 40 cm
360 cm²
D¹ = 9Cm × 2 = 18 Cm
D² = 31Cm × 9 = 40 Cm
Luas = 1/2 × D¹ × D²
= 1/2 × 18 × 40
= 9 × 40
= B. 360 cm²
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d¹=9cm × 2
=18cm
d²=31 cm + 9 cm
=40 cm
L=1/2 × d¹ × d²
=1/2 × 18 cm × 40 cm
=9cm × 40 cm
360 cm²
D¹ = 9Cm × 2 = 18 Cm
D² = 31Cm × 9 = 40 Cm
Luas = 1/2 × D¹ × D²
= 1/2 × 18 × 40
= 9 × 40
= B. 360 cm²