P4 Math topics- Perimeter of Shapes 小四數學- 周界

Perimeter is the distance around a polygon. You calculate the perimeter by adding all the lengths of the sides.
周界是一個圖形的每條邊加起來的長度。

Answer the following questions:
試回答下列問題:

1. The perimeter of the following figure is _____________ cm.
下列圖形的周界是 ________________ cm。




A. 45
B. 46
C. 47
D. 48

2. The perimeter of the following figure is _____________ cm.
下列圖形的周界是 ________________ cm。




A. 25
B. 30
C. 35
D. 40

3. What is the perimeter of a regular hexagon with a side of 7 m?
一個每條邊均為 7 m 的六邊形的周界是多少?

A. 35 m
B. 42 m
C. 49 m
D. 56 m
________________________________________________________________________

Answers:

1. D
2. B
C. B