Question

sides of a quadrilateral are 9cm, 12cm, 5cm and 8cm. Angle made by the sides 12cm and 5cm is 90°. find the area of the quadrilateral ​

Answer 1

he sides of a quadrilateral ABCD are 6cm,8cm,12cm and 14cm (taken in order).

i.e. ∠ABC=90

o

Now, let us join the points A & C.

So, we get two triangles namely △ABC (a right angled triangle) and △ACD.

Applying Pythagoras theorem in △ABC, we get

AC=

AB

2

+BC

2

Step-by-step explanation: