Question

I only need help on question Q9 (a)

Answer 1

Not sure if this is it
The parts shaded represent 4/10, where 10 represents 360 degrees because that is the entire circle, therefore 40% of 360= 144 degrees

Answer 2

4/10 of a circle = 40% = .4
$.4*360=144$
so it's 144 degrees