There appears to be two question fours.
3
I'm guess the blue part is the wedge in question because of the G
a) fraction is 1-75/360=19/24
b) area is πr² = π(4^2) = 16π sq ft
c) wedge area is (19/24) π r² = (19/24) (16π) = 38π/3 sq ft
d) 38(3.14)/3 = 39.8 sq ft
4
a) 1-360/137 = 223/360
b) πr² = π(28)² = 196π sq mm
c) (223/360) 196 π =21854π/45 sq mm
d) 1525.7 sq mm
4
a) area = (1/6)πr² = (1/6) π(12)² = 24π sq in
b) (1/6) π16² = 128π/3 sq in
