Calculate the area of the triangle shown below.

Calculate the perimeter of the triangle shown below. .

In the figure /_A=90° , /_B=60° BC=10cm Calculate the area of this triangle.

Compute the area of the quadrilateral shown below:

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 picture below shows two circles, each passing through the center of the other. Calculate the area of the region common to both.

Compute the area of the hexagon below.