Question

2
13.a)lf initial and final
temperature of the body is T1=
(30 +- 0.1)°C and T2= ( 50 +-
0.1) °C ,then find rise in
temperature. b) Solve with due
regards to significant figures
13.1+15.18+18.1+21.1= [WRITE
ANSWERS ONLY)​

Answer 1

I don't have you to give answer because I have little confusing