To find the perimeter of a regular shape, you multiply the number of sides by the length of one side. Here is the step-by-step solution for each problem:
1) Square
* A square has 4 equal sides.
* Side length = 6 cm
* Calculation: $4 \times 6 = 24$
* Perimeter =
24 cm
2) Triangle
* This is an equilateral triangle, which has 3 equal sides.
* Side length = 4 in.
* Calculation: $3 \times 4 = 12$
* Perimeter =
12 in.
3) Pentagon
* A pentagon has 5 equal sides.
* Side length = 5 cm
* Calculation: $5 \times 5 = 25$
* Perimeter =
25 cm
4) Octagon
* An octagon has 8 equal sides.
* Side length = 3 m
* Calculation: $8 \times 3 = 24$
* Perimeter =
24 m
5) Decagon
* This shape has 10 equal sides.
* Side length = 8 mm
* Calculation: $10 \times 8 = 80$
* Perimeter =
80 mm
6) Hexagon
* A hexagon has 6 equal sides.
* Side length = 7 in.
* Calculation: $6 \times 7 = 42$
* Perimeter =
42 in.
Final Answer:
1) 24 cm
2) 12 in.
3) 25 cm
4) 24 m
5) 80 mm
6) 42 in.
Parent Tip: Review the logic above to help your child master the concept of printable shapes to measure perimeter.
