Jawapan

  • Pengguna Brainly
2016-02-03T16:32:15+08:00
S x s = 16.81
s^2 = 16.81
s = 4.1

4.1 + 1.5 = 5.6

5.6 x 5.6 = 31.36

B - A 
= 31.36 - 16.81
= 14.55
1 5 1