First, we know the area of a square is side length side length = Area. For this square, the area would be:
18*18=A
324 = A
Now that we know the area that is being referened, we can look at the formula for the area of a rectangle, which is width * length = Area. We know the length and we know the area, so we can fill in these known values and solve for the unknown width.
w*l = A
w*6=324
w=324/6
w=54
So our rectangle has the width of 54 and the length of 6. Lastly, the formula for perimeter is 2w + 2l = P. We can again fill in our knowns and solve for the unknown.
2(54) + 2(6) = P
108 + 12 = P
120 = P
The perimeter of the rectangle is 120 cm.
The decimals are equivalent to given expression are 50.020 and 50.02.
Answer: Sound waves entering a warmer air means that the kinetic energy of the air particles will increase and thus the vibration of particles will be increased and thus the speed of transmission of sound waves increases.
Step-by-step explanation:
77.5%
Change to decimal:-
77.5 ÷ 100 = 0.775
775/1000
31/40
77.5% = 31/40
