Okay so you do not really need the circle equation. if you make a triangle with it's x length as 3 and it's y length as 4, you will be able to find the third length. Do Pythagorean theorem to find the hypotenuse.
the hypotenuse will be five after you calculate it.
sin is opposite over hypotenuse or Y over R
so... the sin is 4/5
make sure you know what quadrant your triangle is in for the negatives
The answer would be (x+3)^2+4
The answer is 47. Just keep adding 4.
Answer:
The length of rectangular pool is 167 meters and the width is 40 meters
Step-by-step explanation:
Let
x ----> the length of rectangular pool
y ----> the width of rectangular pool
we know that
The perimeter of rectangle (rectangular pool) is equal to

we have

so

simplify
----> equation A
----> equation B
solve the system by substitution
substitute equation B in equation A
solve for y

Find the value of x
therefore
The length of rectangular pool is 167 meters and the width is 40 meters