The length of material needed for the border is the perimeter of the backyard play area
<h3>How to calculate the 
length of 
material needed </h3>
The area of the play area is given as:

The area of a trapezoid is calculated using:

Where L1 and L2, are the parallel sides of the trapezoid and H represents the height.
The given parameter is not enough to solve the length of material needed. 
So, we make use of the following assumed values.
Assume that the parallel sides are: 25 feet and 31 feet long, respectively.
While the other sides are 10.2 feet and 8.2 feet
The length of material needed would be the sum of the above lengths.
So, we have:


Using the assumed values, the length of material needed for the border is 74.4 feet
Read more about perimeters at:
brainly.com/question/17297081
 
        
             
        
        
        
Quantify of sand in a bag = 



Quantity of sand that escapes in every 10 minutes :-

Quantity of sand that will escape in 20 minutes :-




Quantity of sand that will remain in the sand bag :-






 
        
             
        
        
        
Answer:
The answer to this question can be defined as follows:
In option 1, She buys 4 memory cards.
In option 2, The cost of memory is $40  
Step-by-step explanation:
Given:
Available space is = 105 GB
required space = 1000 GB  
256 GB memory cost $10.
Find needed memory:
=  1000 GB - 105 GB
= 895 GB 
∴ the available memory is 256 GB.
∵ 256 × 4 = 1024  GB 
The total memory she have = 1024 + 105 = 1129 GB
And  she needs to buy 4 memory cards.
The cost of the four memory cards is= 4 ×10 =  $40.
 
        
                    
             
        
        
        
A) 10w. You wouldn't add the 10 cans to the number of weeks to get the total and you wouldnt add 10 cans to the # of 10 cans times the # of weeks. a) 10w is the correct answer.