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Areas of Parallelograms and Triangles Video Lecture - Class 9

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FAQs on Areas of Parallelograms and Triangles Video Lecture - Class 9

1. What is the formula to find the area of a parallelogram?
Ans. The formula to find the area of a parallelogram is base multiplied by height, i.e., A = base x height.
2. How do you calculate the area of a triangle?
Ans. To calculate the area of a triangle, you can use the formula A = 1/2 x base x height, where base is the length of the triangle's base and height is the perpendicular distance between the base and the opposite vertex.
3. Can we use the same formula to find the area of any triangle?
Ans. No, the formula A = 1/2 x base x height is only applicable to right-angled triangles. For other types of triangles, you may need to use different formulas, such as Heron's formula or the formula for the area of an equilateral triangle.
4. How do you find the height of a parallelogram if it is not given?
Ans. If the height of a parallelogram is not given directly, you can use the formula A = base x height and rearrange it to find the height. Divide both sides of the equation by the length of the base, and you will get the height.
5. Is the area of a parallelogram always equal to the area of a triangle with the same base and height?
Ans. Yes, the area of a parallelogram is always equal to the area of a triangle with the same base and height. This is because a parallelogram can be divided into two congruent triangles by drawing a diagonal, and each triangle will have half the area of the parallelogram.
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