Answer : 4.5 × 10⁴ square inches can be washed per hour.
Step-by-step explanation :
As we are given that an area can be washed at a rate of 4,900 cm²/min. Now we have to determine the square inches can be washed per hour.
Given conversions are:
1 cm = 0.39 in and 1 hr = 60 min
As, 1 cm² = (0.39)² in² and 1 min = 1/60 hr
So, 
Now we have to determine the square inches can be washed per hour.
As,
So, 
Therefore, 4.5 × 10⁴ square inches can be washed per hour.
X=6 2+1=3 and 3 x 2=6 so x is 6
By Green's theorem,
where 
is the circle 
and 
is the interior of , or the disk 
.
Convert to polar coordinates, taking
Then the work done by 
on the particle is
When the Sun's energy moves through space, it reaches Earth's atmosphere and finally the surface. This radiant solar energy warms the atmosphere and becomes heat energy. This heatenergy is transferred throughout the planet's systems in three ways: by radiation, conduction, and convection.
