A circle has a radius of 13 cm with a chord 12 cm away from the centre of the circle. Calculate the length of the chord.

The angle of a sector of a circle of radius 3.4 cm is 115°. Find the area of the sector.

\((Take \pi = \frac{22}{7})\)

An equilateral triangle has a side 2 cm. Calculate the height of the triangle.

The length of the diagonal of a square is 12 cm. Calculate the area of the square.

The diagonals of a rhombus are 16 cm and 12 cm find the length of the side.