In the diagram, EFGH is a circle centre O. FH is a diameter and GE is a chord which meets FH at right angle at the point N. If NH = 8cm and EG = 24cm, calculate FH

If the diagram is the graph of y = x\(^2\), the shaded area is

The cumulative frequency curve represents the ages of ages of students in a school. What age group do 70% of the students belongs?

In the figure PQR a straight line segment, PQ = QT. Triangle PQT is an isosceles triangle, < SRQ is 75º and < QPT IS 25º. Calculate the value of < RST