Justin is pouring a concrete walkway around his
grandmother's rectangular garden. He wants the
walkway to be 3 feet wide all the way around. If
his grandmother's garden is 25 feet by 42 feet,
what is the area of the top of the walkway?

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

your answer is  

d.

196.5 m2

step-by-step explanation: