In the diagram, O is the centre of a wheel of circumference 125
cm. The points X, Y and Z are on the circumference of the wheel and
the length of the minor arc XY is 16 cm. Calculate the area
of the major segment XYZ. Before this question, we were asked to
find the acute angle XOY and also radius of the wheel.
Correct answer is 1230 cm3
The number of bacteria in aculture grows exponentially according
to an equation given by N = Z e^kt where t is the time elapsed
and Z is the intial no. the population of bacteria is recorded to
increase from 1 million to 5 million in 4 hours.
Calculate value of Z and hence find k. (ans key: k = 0.402)
Can't find value of Z somehow... did sub in all the available
values but still can't solve this