Answer:
$82
Step-by-step explanation:
15% = $12.30
5% = $4.10 (divide both sides by 3)
100% = $82 (times both sides by 20 to get to 100% - original price)
To evaluate 
, you'd start by rewriting this as 
and your first step of evaluation is to evaluate 
.
When you evaluate , you have the following:
and this is undefined. Since you cannot perform the first step of the evaluation, you cannot evaluate 
.
Calculate the circumference and then add the 1 cm overlap:
C = pi*(6.6 cm) + 1 cm = 21.7 cm.
Next, mult this C by the height, 8.8 cm: Total area is 21.7 cm times 8.8 cm,
or 191.3 cm^3 (answer)
Central angle (radians) = arc length / radius
<span>
<span>
</span></span>central angle (radians) = 12*PI / 10
central angle (radians) = 6*PI / 5
central angle = 216 degrees
