This question is not well designed. The words and the picture is confusing. Are we supposed to think the footpath is made of circles or has a rectangular skirting around the circles?
So should I assume it with the skirting since there is no π value given? Typically a question with circle calculation would provide the π value. Like the previous question no π value was given because there was no need to use the circle formula at all.
Breadth = 6 circles
d = diameter of circle
2(10+6)d = 48
d = 48/32 = 1.5m
(b) Area of rectangular field = (10 x 1.5) x (6 x 1.5) = 135
Area of the footpath = (4.5 + 1.5 + 12 + 4.5 ) x 1.5 = 33.75
Hence area of field not covered by the footpath = 135-33.75 = 101.25cm2
PS: Please let me know if the answer is 101.25 or 108.5(to 1 dec place).