Tolong bantu Pakai cara Terima kasih

luas lingkaran besar= 10*10*3.14*1/2=157
luas lingkaran kecil=5*5*3.14*1/2=39.25

luas daerah arsir= 157-39.25=117.75 (D)

L=1/2π1r²–(1/2π2r²)
=1/2(3,14)(10)²–(1/2(3,14)5²)
=1/2(3,14)(100)-1/2(3,14)(25)
=1/2(314)-1/2(78.5)
=157–39,25
=117,75 cm²