Area of a circle is:
A = pi * r^2
If the diameter is 10 feet, the radius will be half of that or 5.
So:
A = 3.14 * 5^2
Simplify exponent:
A = 3.14 * 25
Multiply:
A = 78.5
Answer:
7.8
Step-by-step explanation:
We can use pythagorean theorem
where a and b are sides of a right triangle and c is the hypotenuse.
.


Rounded to the nearest tenth, x = 7.8