mohon di jawab!!!please

L 1/4 lingkaran I
= 1/4 × Π r²
= 1/4 × 22/7 ×21²
= 1/4 × 22/7 × 441
= 1/4 × 22 × 63
= 1/4 × 1386
= 346,5 cm²

L 1/2 lingkaran II
= 1/2 × Π r²
= 1/2 × 3,14 × 10,5²
= 1/2 × 3,14 × 110,25
= 1/2 × 346,125
= 173,0925 cm²

L 1/2 lingkaran III
= 1/2 × Π r²
= 1/2 × 3,14 × 10,5²
= 1/2 × 3,14 × 110,25
= 1/2 × 346,125
= 173,0925 cm²

L daerah yang diarsir
= 346,5 + 173,0925 - 173,0925
= 346,5 cm²

Semoga membantu
jawabannya yang D