Question

Plis jawab nomor 1-2 pakai cara
pointnya banyak loh ​

Answer 1

Verified answer

1) Luas persegi = s² = 42² = 1.764 cm²

Luas setengah lingkaran = ½πr² = ½ x 22/7 x 21² = 693 cm²

Luas yg diarsir = 1.764 - 693 = 1.071 cm²


2) Luas trapesium = ½ x (a + b) x t = ½ x (28 + (28 + 21) x 28 = 1.078 cm²

Luas setengah lingkaran = ½πr² = ½ x 22/7 x 14 x 14 = 308 cm²

Luas daerah diarsir = 1.078 - 308 = 770 cm²