Answer:
920 cm^2
Step-by-step explanation:
There are 2 rectangles in the overall shape, find the areas of each rectangle... The first one is 800 and the second is 120 then we add those to make the whole shape: 920!
Answer:
170
Step-by-step explanation:
20 + (26 - 1)6
= 20 + (25)6
= 20 + 150
= 170
Answer:
y=3
Step-by-step explanation:
12-5=7
13-6=7
or if you were doing fractions
ten thirds
3
-
10
<span>THE AREA OF THE ROOM IS :A=4*2.4=9.6 m^2
THICKNESS t=0.30 m
DIFFERENCE IN TEMPERATURE dT=18-6=12
q=kAdT/dx=kA*dT/t
q=1.3(9.6)(12)/0.30=4992 W=499.2 J/s
In 1 hour or 3600 sec
P=q*T=(499.2 J/s)(3600 s)=1797120 J=1.8 MJ
1.8MJ OF HEAT FLOWS HTROUGH THE WALL IN ONE HOUR</span>