All the Maths Formulas for Mensuration

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Collegedunia Team

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Here are some of the important formulas for mensuration in mathematics:

  1. Area of a Circle: πr2, where r is the radius of the circle. The formula for finding the area of a circle is π times the radius squared. For example, if the radius of a circle is 5 cm, then the area would be 25π square cm.
  2. Circumference of a Circle: 2πr, where r is the radius of the circle. The formula for finding the circumference of a circle is 2 times π times the radius. For example, if the radius of a circle is 5 cm, then the circumference would be 10π cm.
  3. Area of a Rectangle: l x b, where l is the length and b is the breadth of the rectangle. The formula for finding the area of a rectangle is the product of its length and breadth. For example, if the length of a rectangle is 6 cm and its breadth is 4 cm, then the area would be 24 square cm.
  4. Perimeter of a Rectangle: 2(l + b), where l is the length and b is the breadth of the rectangle. The formula for finding the perimeter of a rectangle is 2 times the sum of its length and breadth. For example, if the length of a rectangle is 6 cm and its breadth is 4 cm, then the perimeter would be 20 cm.
  5. Area of a Square: s2, where s is the side of the square. The formula for finding the area of a square is the side squared. For example, if the side of a square is 5 cm, then the area would be 25 square cm.
  6. Perimeter of a Square: 4s, where s is the side of the square. The formula for finding the perimeter of a square is 4 times the side. For example, if the side of a square is 5 cm, then the perimeter would be 20 cm.
  7. Area of a Triangle: (1/2)bh, where b is the base and h is the height of the triangle. The formula for finding the area of a triangle is (1/2) times the base times the height. For example, if the base of a triangle is 6 cm and its height is 4 cm, then the area would be 12 square cm.
  8. Volume of a Cube: s3, where s is the side of the cube. The formula for finding the volume of a cube is the side cubed. For example, if the side of a cube is 5 cm, then the volume would be 125 cubic cm.
  9. Volume of a Rectangular Prism: l x b x h, where l, b and h are the length, breadth and height of the rectangular prism respectively. The formula for finding the volume of a rectangular prism is the product of its length, breadth, and height. For example, if the length of a rectangular prism is 6 cm, its breadth is 4 cm, and its height is 5 cm, then the volume would be 120 cubic cm.
  10. Volume of a Sphere: (4/3)πr3, where r is the radius of the sphere. The formula for finding the volume of a sphere is (4/3) times π times the radius cubed. For example, if the radius of a sphere is 5 cm, then the volume would be (4/3) x π x 125 cubic cm.
  11. Surface area of Sphere: 4πr2, where r is the radius of the sphere. The surface area of a sphere is the total area of its outer surface. It is equal to four times the area of a great circle of the sphere, which is a circle that passes through the center of the sphere and has the same diameter as the sphere. For example: Suppose the radius of a sphere is 5 cm. Surface area = 4πr2 = 4π x 52 = 4π x 25 = 100π square cm. So, the surface area of the sphere with a radius of 5 cm is 100π square cm.

Mensuration Formulas

Mensuration Formulas

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CBSE CLASS XII Related Questions

  • 1.

    Find the value of \(x\) if \(A = B\), where

    \[ A = \begin{bmatrix} 6 & 3x \\ 8 & -6 \end{bmatrix} \text{ and } B = \begin{bmatrix} 6 & x^2+2 \\ 8 & x^2-5x \end{bmatrix}. \]


      • 2.

        For events A and B, if \(P(B)=\frac{3}{5}\), \(P(A/B)=\frac{1}{2}\) and \(P(A\cup B)=\frac{4}{5}\), then \(P(A)\) is :

          • \(\frac{1}{2}\)
          • \(\frac{3}{5}\)
          • \(\frac{1}{5}\)
          • \(\frac{3}{10}\)

        • 3.

          Solve the differential equation \( y + \frac{d}{dx}(xy) = x(\sin x + \log x) \).


            • 4.

              For the given Linear Programming Problem, shade the feasible region on the graph and write the coordinates of the corner points.

              Minimize \(Z = 5x + 7y\)

              subject to constraints

              \[ 2x + y \geq 8 \]

              \[ x + 2y \geq 10 \]

              \[ x,\ y \geq 0. \]


                • 5.

                  Differential of \( \log \sin x \) with respect to \( \sqrt{\cos x} \) is :

                    • \( -2\sqrt{\cos x}\cdot\cot x\cdot\operatorname{cosec} x \)
                    • \( \sqrt{\cos x}\cdot\cot x\cdot\operatorname{cosec} x \)
                    • \( \frac{2\sqrt{\cos x}}{\sin x} \)
                    • \( \frac{1}{\sin x\sqrt{\cos x}} \)

                  • 6.

                    For the following Linear Programming Problem, shade the feasible region on the graph and find the coordinates of its corner points :

                    Minimize \(Z = 18x + 10y\)

                    subject to constraints

                    \[ \begin{aligned} 4x + y &\ge 20 \\ 2x + 3y &\ge 30 \\ x, y &\ge 0. \end{aligned} \]

                      CBSE CLASS XII Previous Year Papers

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