Tolong kerjakan 3 nomor itu pake cara jangan asal2 an tq

8.
AC = d

d = √8² + 6²
d = √100
d = 10 , r = 5

L = 3,14 × 5 × 5
L = 78,5 cm²

9.
<STP = <TSP = 32°

<SPT = 180 - (32 + 32)
<SPT = 180 - 64
<SPT = 116°

<SRT = 116 ÷ 2
<SRT = 58°

10.
K = πd
44 = 22/7 × d
d = (44 × 7)/22
d = 14 , r = 7

L = 22/7 × 7 × 7
L = 154 cm²

semoga membantu :)