tolong dijawab beserta caranya

22. L=1/8×π×r²
=1/8×22/7×28×28
=1/8×22×4×28
=1/2×22×28
=11×28
=308cm²

23. L1=S². L2=1/4×π×r²
=14². =1/4×22/7×14×14
=196cm². =154cm²

jadi L.total = L1+L2 = 196+154=350cm²