Help me with this problem please

(c) 4 small squares

Step-by-step explanation:

Given

Small Square:

Large Square:

i.e. twice as long as the small square

Solving (a): The area of the small square.

This is calculated as

So, we have:

Solving (b): The area of the large square.

This is calculated as

So, we have:

Solving (c): Number of small square to cover the large square

To do this, we simply divide their areas.

Let n represents the required number; n is calculated as:

Hence, 4 small squares is required to cover the large square

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

hi! i think the answer is 1/2 : )