Elevator Mechanic Practice Exam

Question: 1 / 400

What is the formula to find the area of a 10" plunger?

Diameter x Radius

Pie x Diameter

Pie x Radius Squared

To find the area of a circle, the correct formula involves the radius and pi. Specifically, the area \( A \) is calculated using the formula \( A = \pi r^2 \), where \( r \) is the radius of the circle.

In the case of a 10-inch plunger, the radius is half of the diameter, which would be 5 inches. By using the formula \( \pi r^2 \), you would substitute the radius into the equation to find the area. Therefore, the choice that correctly identifies the formula for calculating the area of a circle is the one that uses the radius squared multiplied by pi, as this accurately reflects the mathematical principle required to determine the area.

Recognizing this, it is essential to understand that while diameter is a key measurement of a circle, it does not directly yield the area without converting it to the radius. Other options provided either misapply geometric principles or do not convey the correct relationship necessary to compute the area accurately.

Get further explanation with Examzify DeepDiveBeta

Radius x Diameter Squared

Next Question

Report this question

Download Elevator Mechanic Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy