1.
What is the formula to calculate the perimeter of a rectangle?
Correct Answer
C. P = 2l + 2w
Explanation
The formula to calculate the perimeter of a rectangle is P = 2l + 2w. This formula takes into account the length (l) and width (w) of the rectangle and calculates the sum of twice the length and twice the width. By adding the lengths of all four sides, we get the total perimeter of the rectangle.
2.
What is the formula for calculating the area of a circle?
Correct Answer
D. A = πr^2
Explanation
The formula for calculating the area of a circle is A = πr^2. This formula is derived from the definition of a circle, which states that a circle is a set of all points that are equidistant from a fixed center point. The area of a circle is the amount of space enclosed within the circle's boundary. The formula A = πr^2 represents the area of a circle as the product of the mathematical constant π (pi) and the square of the radius (r), which is the distance from the center of the circle to any point on its boundary.
3.
What is the formula for volume?
Correct Answer
A. Volume = length x width x height
Explanation
The formula for volume is determined by multiplying the length, width, and height of an object. This formula calculates the amount of space that an object occupies in three dimensions. The correct answer is "Volume = length x width x height."
4.
What is the formula for finding the volume of a rectangular prism?
Correct Answer
A. Volume = l × w × h
Explanation
The formula for finding the volume of a rectangular prism is given by multiplying the length (l), width (w), and height (h) together. This is represented by the equation V = l × w × h.
5.
What is the formula to calculate the perimeter of a triangle?
Correct Answer
A. P = a + b + c
Explanation
The formula to calculate the perimeter of a triangle is P = a + b + c. This formula adds up the lengths of all three sides of the triangle to determine its perimeter.
6.
What is the formula for finding the area of a triangle?
Correct Answer
D. A = 1/2 × b × h
Explanation
The formula for finding the area of a triangle is A = 1/2 * b * h. This formula represents the area of a triangle as half of the base (b) multiplied by the height (h). This formula is derived from the concept that the area of a triangle can be represented as half of the area of a rectangle with the same base and height.
7.
What is the formula for calculating the volume of a cylinder?
Correct Answer
B. V = πr^2h
Explanation
The formula for calculating the volume of a cylinder is V = πr^2h, where V represents the volume, π represents the mathematical constant pi, r represents the radius of the cylinder's base, and h represents the height of the cylinder. This formula is derived from the fact that the volume of a cylinder can be thought of as the area of the base (πr^2) multiplied by the height (h).
8.
What is the formula for finding the volume of a cone?
Correct Answer
A. V = 1/3 × πr^2h
Explanation
The formula for finding the volume of a cone is V = 1/3 × πr^2h. This formula includes the radius (r) and height (h) of the cone, and uses the mathematical constant π (pi). The fraction 1/3 is multiplied by the product of π, r^2, and h to calculate the volume.
9.
What is the formula to find the perimeter of a square?
Correct Answer
B. P = 4a
Explanation
The formula to find the perimeter of a square is P = 4a. In this formula, "P" represents the perimeter and "a" represents the length of one side of the square. Since a square has four equal sides, multiplying the length of one side by 4 gives us the total perimeter of the square.
10.
For a regular hexagon with each side measuring 5 cm, what is the perimeter of the hexagon?
Correct Answer
A. 30 cm
Explanation
A regular hexagon has six equal sides. In this question, each side measures 5 cm. To find the perimeter of the hexagon, we need to add up the lengths of all six sides. Since each side is 5 cm, the total perimeter is 5 cm + 5 cm + 5 cm + 5 cm + 5 cm + 5 cm = 30 cm. Therefore, the correct answer is 30 cm.