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What is the perimeter? | Year 3 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 3 Mathematics

Question for What is the perimeter?
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What is the perimeter of a rectangle with a length of 5 cm and a width of 3 cm?
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FAQs on What is the perimeter? - Year 3 Mathematics

1. What does perimeter mean in the context of shapes?
Ans. The perimeter of a shape is the total distance around the outside of the shape. It is the sum of all the sides of the shape.
2. How is the perimeter different from the area of a shape?
Ans. The perimeter of a shape refers to the distance around the shape, while the area of a shape refers to the amount of space inside the shape.
3. How can the perimeter of a rectangle be calculated?
Ans. The perimeter of a rectangle can be calculated by adding up all four sides of the rectangle using the formula: perimeter = 2(length + width).
4. Are there any units used when expressing the perimeter of a shape?
Ans. Yes, the perimeter is usually expressed in the same units as the measurements of the sides of the shape. For example, if the sides are measured in meters, the perimeter will be in meters.
5. Why is it important to know the perimeter of a shape?
Ans. Understanding the perimeter of a shape is important for various real-life applications such as fencing a garden, measuring the length of a track, or determining the amount of material needed to go around the edge of a shape.
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