Question

Plz help me with this question

Answer 1

Answer:

1st divide the quadrilateral into two parts of triangle:

# 1st part should be of sides 3 and 4 and angle between them is 90 degree given. Then it would be a right angled triangle. Name this triangle as "1".

# The 2nd part should be of sides 7 and 7 that is it would become an isosceles triangle. Name this triangle as 2.

Now, in triangle 1 , since it is a right angled triangle,find the 3rd side with the help of pythogoras theorem and then find the area of triangle 1.

Now, in triangle 2, since we've found the 3rd side, we can easily find the area of isosceles triangle by applying the area formula.

So, after finding area of each triangle, we would sum up the area and that would be our find answer.