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What is the perimeter? | Year 4 Mathematics PDF Download

Perimeters

  • The perimeter is the distance all the way around the outside of a 2D shape.
  • To work out the perimeter, add up the lengths of all the sides.

What is the perimeter? | Year 4 Mathematics

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What is the perimeter of a rectangle with sides of length 5 cm and 8 cm?
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FAQs on What is the perimeter? - Year 4 Mathematics

1. What is the definition of perimeter in mathematics?
Ans. The perimeter is the distance around the outside of a shape. It is the sum of all the lengths of the sides of the shape.
2. How is the perimeter of a rectangle calculated?
Ans. To calculate the perimeter of a rectangle, add together the lengths of all four sides of the rectangle, which can be calculated using the formula: Perimeter = 2(length + width).
3. What is the difference between perimeter and area?
Ans. Perimeter is the distance around the outside of a shape, while area is the measure of the space inside a shape. Perimeter is measured in linear units (such as inches or centimeters), while area is measured in square units (such as square inches or square centimeters).
4. Can the perimeter of a shape be negative?
Ans. No, the perimeter of a shape cannot be negative. Perimeter is always a non-negative value that represents the total distance around the shape.
5. How is the perimeter of a complex shape calculated?
Ans. To calculate the perimeter of a complex shape, break the shape down into simpler shapes (such as rectangles, triangles, or circles) and calculate the perimeter of each individual shape. Then, add together the perimeters of all the simpler shapes to find the total perimeter of the complex shape.
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