ABCD is a parallelogram,angleD=`120^@`, AB=10,AC=12.Calculate the area of the parallelogram.

In the figure ABCD iś a parallelogram. dotP, Q, R and S are the midpoint of the sides of the parallelogram. Prove that P Q=R S and Q R=P S .

In the figure given below P, Q, R are the mid points of the sides of AB, BC and AC of the triangle ABC . The area of the triangle ABC is 60 sq.cm. find the area of the parallelogram APQR.

In the figure P is the centre of the circle A,B and D are points on the circle. angleP=90^o , AD=5 centimetres Find the area of the parallelogram ABCD . .

Consider the parallelogram ABCD.Find the area of the parallelogram ABCD.

In the picture below, A B C D and A E F B are parallelograms. Area of paRallelogram ABCD is 18 sq.cm. What is the area of parallelogram AEFB?

In the figure, line AB is parallel to CD. AB=5 cm , AC=4 cm, angle CAB= 90^circ . a) Calculate the area of triangle ABC. b) How much is the area of triangle ABD? Write reason.

The adjacent sides of a parallelogram are veca=3i+lambdaj+4k and vecb=i-lambdaj+k .If the area of the parallelogram is sqrt42 square units, find the value of lambda .