jawab soal yg nomor 22 dan 23

No.22
Jawaban : B
Sesuai dengan Teori Phytagoras

No.23
Luas ¾ lingkaran = 3/4 × 22/7 × r²
462 = 3/4 × 22/7 × r²
462 = 66/28 × r²
462 (28) = 66 × r²
12.936 = 66 × r²
196 = r²
r = √196
r = 14 cm

Keliling ¾ Lingkaran = 3/4 × 2 × π × r
•••••• = 3/4 × 2 × 22/7 × 14
•••••• = 1.848/28
•••••• = 66 cm

Keliling sisi jari jari
= 66 cm + 14 cm + 14 cm
= 94 cm
Jawaban : A