tolong pakai cara yang benar

24. 1/4 x 22/7 x14x14
= 154 (b)
25. 14 + 14 = 28
L.persegi
= 28 x28
= 784
L 1/2 lingkaran
= 1/2 x 22/7 × 14 x 14
= 308
luas arsir = 784 - 308
= 476

24. 1/4x22/7x14x14=154
25. 28x28=784
1/2x22/7x14x14=308
784-308=476