The formula to find the area of a circle is:
Step 1:We will be dividing the diameter by two to find the radius.
16 ÷ 2 = 8
Step 2:We will find what 8 squared is.
8*8= 64
Step 3:We will be inputting this number is our formula.
Step 4:We still need to multiply

to find our area.

= 201.0619298297467673
Step 5:
We will round this to the nearest whole number.
Our rounded number is 201
Our answer:
or
<span><span>x=<span><span>−4</span>+<span><span><span><span><span>√21</span></span> or </span></span>x</span></span></span>=<span><span>−4</span>−<span>√<span>21</span></span></span></span>