Question

hmmm how to do this question help please

Answer 1

Use the fomula of triangle and then multiply it with four

Answer 2

Answer:

Step-by-step explanation:

IN TRIANGLE ADC , angle a = 90

$dc^{2} = ac^2 + ad^2\\9^2 = 7^2 + ad^2\\ad^2= 81-49\\ad^2 = 32\\ad= 4\sqrt{2}\\\\ IN TRIANGLE ADC AND EAB [where e is the last corner side of figure ]\\there fore , ab ||dc\\then ADC ~ EAB\\therefore \frac{ea }{ad} = \frac{ab}{dc} \\ \frac{12-4\sqrt{2} }{4\sqrt{2} }= \frac{ab}{9} [ ae = ed - ad ]\\ \frac{12-4\sqrt{2} }{4\sqrt{2} }[9]=ab\\\\therfore , in traapazium abcd , \\AREA = sum of parrell sides\frac{1}{2} * height\\ =ab + dc \frac{1}{2} * EA \\ = PUT THE VALUE YOU WILL$get your answer