Page 155 - NUMINO Challenge_C1
P. 155
Answer p.70~p.71 2
Key
Type 8-1 Using Nets
1
A
2
A Type 8-2 The Perimeter of a Rectangular Prism Net p.72~p.73
3 1 10 10 3 2 14 10 10 2 2 16
Therefore, has a smaller perimeter.
A
2 1 cm
Problem solving
1 cm
1
Perimeter: 30 cm
Four faces meet at a vertex when a square is Problem solving
added on , and . The faces overlap when
it is added on and , so the diagram cannot 1 The perimeter of the net with the most number
become a cube net in these two conditions. A
cube net can be completed when you add a of short sides connected is equal to the
square in , , and . Since the shape is perimeter of a rectangle 10 cm wide and
the same as and shape is the same as , 8 cm high. Therefore, (10 8) 2 36 cm.
therefore, two different nets can be drawn.
2 cm
or
3 cm 3 cm 2 cm
3 cm 2 cm
3 cm
NUMINO Challenge C1
Key
Type 8-1 Using Nets
1
A
2
A Type 8-2 The Perimeter of a Rectangular Prism Net p.72~p.73
3 1 10 10 3 2 14 10 10 2 2 16
Therefore, has a smaller perimeter.
A
2 1 cm
Problem solving
1 cm
1
Perimeter: 30 cm
Four faces meet at a vertex when a square is Problem solving
added on , and . The faces overlap when
it is added on and , so the diagram cannot 1 The perimeter of the net with the most number
become a cube net in these two conditions. A
cube net can be completed when you add a of short sides connected is equal to the
square in , , and . Since the shape is perimeter of a rectangle 10 cm wide and
the same as and shape is the same as , 8 cm high. Therefore, (10 8) 2 36 cm.
therefore, two different nets can be drawn.
2 cm
or
3 cm 3 cm 2 cm
3 cm 2 cm
3 cm
NUMINO Challenge C1
