x=width
3x=length
3x+x=24
4x=24
4x/4=24/4
x=6
x=width=6cm
3x=length=18cm
18/2=9 cm
6/2=3cm
Length=9cm
width=3cm
because there are two length sides and 2 width sides
Answer:
38.9 square inches.
Step-by-step explanation:
We are asked to find the difference in area covered by a single 3 inch windshield wiper operating with a central angle of 138 degrees compared to a pair of 5 inch wipers operating together each having a central angle of 114 degrees.
We will use area of sector formula to solve our given problem as:
, where, r represents radius and theta represents central angle.
Let us find area of sector with central angle 140 degree and radius 3 inch.



Now, we will find area of sector with central angle 114 degree and radius 5 inch and multiply by 2 as:




Let us find difference of area as shown below:



Therefore, the difference in area covered is approximately 38.9 square inches.
This is pretty easy but ok.
The answer is -5.
I love unit rate 13/34=0.38 months to write 1 chapter or write 2.62 in one month (34/13)