tolong donk pake caranya

diket: r1 = 14 cm, r2 =7 cm

L 1/2 lingkaran 1
= 1/2×phi×r1^2
= 1/2×22/7×14^2
= 11/7×196
= 11×28
= 308 cm^2
L 1/2 lingkaran 2
= 1/2×phi×r2^2
= 1/2×22/7×7^2
= 11/7×49
= 11×7
= 77 cm^2

jumlah Luas = 308+77 = 385 cm^2


mohon maaf apabila jwbanya salah.