P is a point outside a circle and is 26 cm away from its centre. A secant PAB drawn form P intersects the circle at points A and B such that PB=32 cm and PA=18cm. The radius of the circle (in cm) is:

'G' is centroid of ΔABC if AG = BC then find ∠BGC.

The adjacent angles on a straight line are in the ratio 5 ∶ 4, then the smaller angle is –

A wire is in the shape of a rectangle. Its length is 42.7m and breadth is 21.8m. If the same wire is re-bent in the shape of a square, what will be the measure of the side of the square?

If each side of a cube is increased by 10%. Then find the percent change in the volume of the cube.

If radius of a sphere is decreased by 48%, then by what percent does its surface area decrease?

The largest and the second largest angles of a triangle are in the ratio of 3 : 2 respectively. The smallest angle is 20% of the sum of the rest two angles. What is the sum of the smallest and the second largest angles?

Each exterior angle of a regular polygon measures 9°. How many sides does the polygon have?