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Poster: Perimeter and Area | Mathematics for Class 4 PDF Download

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FAQs on Poster: Perimeter and Area - Mathematics for Class 4

1. What is the difference between perimeter and area?
Ans. The perimeter is the total distance around the outside of a shape, calculated by adding the lengths of all its sides. Area, on the other hand, measures the amount of space inside a shape and is calculated using different formulas depending on the shape (e.g., length × width for rectangles, πr² for circles).
2. How do you calculate the perimeter of a rectangle?
Ans. To calculate the perimeter of a rectangle, you add together the lengths of all four sides. The formula is P = 2(length + width), where 'length' is the longer side and 'width' is the shorter side.
3. What is the formula for calculating the area of a triangle?
Ans. The area of a triangle can be calculated using the formula A = 1/2 × base × height. Here, the 'base' refers to the length of one side of the triangle, and 'height' is the perpendicular distance from that base to the opposite vertex.
4. Can you explain how to find the area of a circle?
Ans. The area of a circle is calculated using the formula A = πr², where 'r' is the radius of the circle (the distance from the center to the edge). You multiply the square of the radius by π (approximately 3.14).
5. Why is understanding perimeter and area important?
Ans. Understanding perimeter and area is crucial in many real-world applications, such as in construction, land development, and design. It helps in determining the amount of material needed for projects, the size of spaces, and ensuring that designs meet specific requirements and regulations.
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