tolong dijawab! Yg nomor 24 & 25

24.2(p+l)
2(53+45)= 2 x 98 = 196

196 x 55.000 = 10.780.000 (d)

25. Radius = jari" (r)
Phi x r x r x t = v
22/7 x 14 x 14 x t = 14.168
22 x 28 x t = 14.168
616 x t = 14.168
t = 14.168 /616 = 23
Jadi t = 23

53dm= 530mx2=1060
45dm:450mx2=900
1060+900=1960x55.000,00=d 10.780.000,00 24