tolong di jawab pliss

1). OE
2). B.BC
3). K = 2×πr
K = 2 × 22/7 × 14
K = 44×2
K = 88cm

4). K = 2 × π×r
K = 2 × 22/7 × 21
K = 44 × 3
K =132

banyak pohon palem
=132 : 6
=22pohon

5).L = π×r²
L = 3.14 × 20 × 20
L =1256cm²