Please help fast argent!!!!
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Answer:
CN = 7cm
Step-by-step explanation:
Area of the figure ABCD = 144 cm²
AM = 5cm BD = 24cm
ADB is a triangle and AM is a median of the triangle.
Area of the triangle ADB = 1/2 × H × B = 1/2 × 5 × 24 = 60 cm²
144 cm² - 60 cm² = 84 cm²
so,the triangle CDB = 84 cm²
84 = 1/2 × H × B
84 = 1/2 × H × B= 84 = 1/2 × CN × 24
84 = 1/2 × H × B= 84 = 1/2 × CN × 24= 84 × 2 = CN × 24
84 = 1/2 × H × B= 84 = 1/2 × CN × 24= 84 × 2 = CN × 24= 168 = CN × 24
84 = 1/2 × H × B= 84 = 1/2 × CN × 24= 84 × 2 = CN × 24= 168 = CN × 24= 168 / 24 = CN
84 = 1/2 × H × B= 84 = 1/2 × CN × 24= 84 × 2 = CN × 24= 168 = CN × 24= 168 / 24 = CN= 7 cm = CN
Hence CN = 7cm
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