Add 9, 6 times
And add 8, 7 times
The length of rectangular swimming pool = 25 feet
The width of the swimming pool = 12 feet
The pool is surrounded by a fence which is h feet from each side
So, length of fence becomes = 25+2h
Width of fence becomes = 12+2h
The expression for the length of the fence is 25+2h feet
2h because 'h' increases for both ends of the length of the pool.
Hello!
A(r) is a function. It takes a value of r, and from that calculates the value A. In this case, it takes the value of a radius, and <u>depending on what that value is</u>, it calculates the area.
A(3) would therefore represent the area based off of a radius of 3.
Hope this helps!