Mohon bantuanya yaa...

Keliling lingkaran= 2 phi. R

= 1/2x2x22/7x7
=22
.
=22x3 (karena keliling 1/2 lingkaran ada 3)
=66
.
66+14= 80
Semoga membantu

L.Jajar genjang
= a × t
= 60 × 28
= 1680 cm^2

L.lingkaran
= phi × r × r
= 22/7 × 14 × 14
= 616 cm^2

L.Daerah yg diarsir = 1680 - 616 = 1064 cm^2