**Helpful Links13) A square has an area of 81 cm^{2}

a) Find the perimeter of the square.

**[2 marks]**

The diagram shows a right-angled triangle and a parallelogram.

The area of the parallelogram is 5 times the area of the triangle.

The perpendicular height of the parallelogram is

b) Find the value of

The perpendicular height of the parallelogram is

*h*cm.b) Find the value of

*h*.**[3 marks]**