FTCE General Knowledge Math Practice Test

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

Prepare for the FTCE General Knowledge Math Test. Engage with our multiple choice questions featuring hints and explanations. Get ready to ace your exam!

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.

Which formula would you use to find the area of a circle?

(3.14)r^2
1/2PI
1/3Bh
2(3.14)(r)

The correct answer is: (3.14)r^2

The formula to find the area of a circle is indeed (3.14)r^2, where "r" represents the radius of the circle. This formula derives from the mathematical constant pi (approximately 3.14), which is crucial in calculations involving circles. By squaring the radius and multiplying by pi, you effectively calculate the total space enclosed within the boundary of the circle. The other options represent different geometric calculations unrelated to the area of a circle. Option B looks like it’s misrepresenting a formula; it seems to suggest a relation involving pi but lacks critical components necessary to calculate an area. Option C corresponds to the formula for the volume of a prism, not relevant to circles. Lastly, option D represents the formula for the circumference of a circle instead of its area. Therefore, the formula you provided accurately reflects how to determine the area of a circle.