Question

Tolong dijawab yah pakai cara yang nomor 28

Answer 1

Panjang Busur QR = <PRQ/360 × Kell.lingkaran
= 90°/360 × 2.π.r
= 90°/360 × 2.3,14.5
= 90°/360 × 31,4
= 1/4 × 31,4
= 7,85 cm
Ma'af, kemarin salah. Soalnya, di soal 45°.
skrang udah bener.

Answer 2

∠ P = 90°

QR = (90°/360°).π.2r
       = (1/4).3,14.10
       = 7,85 cm.............opsi A