Question

plz say the correct answer​

Answer 1

Answer:

BD : DC = 5 : 6

DC = 6 CM

Step-by-step explanation:

$area \: of \: bdc = \frac{1}{2} \times bd \times h = 10 \\ \\ therefore \: \: h = \frac{10 \times 2}{bd} = \frac{20}{5} \\ \\ h = 4 \: cm \\ \\ now \: \: area \: of \: adc = \frac{1}{2} \times h \times dc = 12 \\ \\ therefore \: \: \: dc = \frac{12 \times 2}{h} \\ \\ dc = \frac{24}{4} \\ \\ so \: \: \: \: \: \: \: \: dc = 6 \: cm. \\ \\ therefore \: \: \: \frac{bd}{dc} = \frac{5}{6}$