# FREE Geometry Formulas Questions and Answers

#### The use of ∏r² for the

** Correct Answer: Area of circle**

The area of a circle can be computed using the formula −r². The mathematical constant pi, which is roughly equal to 3.14159, is represented by the symbol ∏. The radius of a circle, denoted by the letter r, is the length of time that separates any point on the circle's circumference from its center. We can calculate the total area that the circle encloses by squaring the radius and multiplying the result by pi.

#### What is a cube's volume in formula form?

** Correct Answer: V = a^3**

The formula for the volume of a cube is V = a^3, where "a" represents the length of one side of the cube. Because every side of a cube has the same length, we can use this formula to find the volume of the cube by multiplying the length of one side by itself twice (a^2) and then by the length of one side again (a).

#### The third angle can be found using the formula

** Correct Answer: ∠A + ∠B + ∠C = 180°**

∠A + ∠B + ∠C = 180° is the formula used to find the sum of the angles in a triangle. This is due to the fact that any triangle's interior angles add up to 180°. For this reason, ∠A + ∠B + ∠C = 180° is the right response.

#### V = lwh/3 is the formula for

** Correct Answer: Volume of Pyramid**

A pyramid's volume is represented by the formula V = lwh/3. By multiplying the pyramid's length, width, and height and dividing the result by three, this formula determines the volume of the structure. Therefore, Volume of Pyramid is the right response.

#### A circle's circumference is equivalent to

** Correct Answer: 2πr**

The distance around a circle's outer edge is its circumference. The formula 2πr, where r is the circle's radius, can be used to calculate it. This formula is based on the fact that any circle's circumference divided by diameter equals π (pi). Consequently, 2πr is the right response since it correctly illustrates the relationship between a circle's circumference and radius.

#### The rectangle's area is

** Correct Answer: Length x width**

You can find a rectangle's area by multiplying its length by its width. This is so because the area of a rectangle, which is calculated by multiplying the lengths of its sides, indicates how much space it takes up inside its bounds. Thus, "Length x width" is the right response.

#### How to calculate a triangle's area

** Correct Answer: A = 1/2 × b × h**

A = 1/2 × b × h is the formula for calculating a triangle's area, in which A stands for the triangle's area, b for its base, and h for its height. The area of a triangle is equal to half the product of its base and height, which is the basis for this formula. Therefore, A = 1/2 × b × h is the right response.