In a circle with centre O, AB is the diameter. P and Q are two points on the circle on the same side of the diameter AB. AQ and BP intersect at C. If ∠POQ = 54°, then the measure of ∠PCA is:

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

5√2 cm in a circle. If the long chord makes a right angle at the centre, then what will be the length of the radius of the circle?

If △ABC is right angled at B, AB = 12 cm and ∠CAB = 60°, determine the length of BC.

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

A cube has sides that are 4 cm each, and the dimensions of a cuboid are 2cm x 3cm x 4cm. Find the positive difference between the volume of the cube and that of the cuboid.

PK is the median and M is a centroid of triangle PQR. If PK is 15 cm, then find length of PM?

Which of the following biomes does not have a tree?