Question

how many different kinds of rectangle can you make with a perimeter of 24 cm?
(Take the square below to be 1 cm × 1 cm)
​

Answer 1

Answer:

Six rectangles can be formed (1 , 11) , (2 , 10) , (3 , 9) , (4 , 8) , (5 , 7) , (6 , 6) with 24 cm long string

Step-by-step explanation:

I think this is answer

Answer 2

Answer:

7

Step-by-step explanation:

Perimeter = 2 x (a + b)

24 = 2 x (a+b)

12 = a + b

How many different a's and b`s can form 12

for a smaller number example let's say 6

1 5

2 4

3 3 -- SQUARE

4 2 -- DOUBLE COUNTING

5 1 -- DOUBLE COUNTING

So you can derive an equation which is 6/2 - 1

So the answer to a + b = 12 is 12/2 - 1 = 7