FTCE Professional Education Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the FTCE Professional Education Test. Study with comprehensive flashcards and engaging multiple choice questions, each crafted with hints and detailed explanations. Enhance your confidence for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

How is the area of a circle calculated?

(3.14)r^2
2(3.14)(r)
3.14(r)(square root of r^2 + h^2)
4/3 (3.14)(r^3)

The correct answer is: (3.14)r^2

The area of a circle is calculated using the formula A = πr², where π (pi) is approximately 3.14 and r represents the radius of the circle. When this formula is presented as (3.14)r², it effectively conveys the same relationship, as 3.14 serves as an approximation for π. This means that to find the area, you square the radius (r) and multiply it by π. The other options represent different mathematical concepts. The second choice provides the formula for the circumference of a circle, which is 2πr, rather than the area. The third option seems to represent a formula related to spheres or other geometric calculations but does not apply to the area of a circle. Lastly, the fourth option relates to the volume of a sphere, using a different formula completely, which is 4/3πr³. The focus on radius squared and multiplication by π in the correct answer aligns exactly with what is needed to determine the area of a circle.